bcm4908: 5.15: fix compilation error for BCM4908 pinmux patch

Fix compilation warning:
drivers/pinctrl/bcm/pinctrl-bcm4908.c: In function 'bcm4908_pinctrl_probe':
drivers/pinctrl/bcm/pinctrl-bcm4908.c:541:53: error: passing argument 3 of 'pinmux_generic_add_function' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
  541 |                                             function->groups,
      |                                             ~~~~~~~~^~~~~~~~
In file included from drivers/pinctrl/bcm/pinctrl-bcm4908.c:16:
drivers/pinctrl/bcm/../pinmux.h:153:46: note: expected 'const char **' but argument is of type 'const char * const*'
  153 |                                 const char **groups,
      |                                 ~~~~~~~~~~~~~^~~~~~
cc1: all warnings being treated as errors

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

target/linux/bcm4908/patches-5.15/080-v5.18-0002-pinctrl-bcm-add-driver-for-BCM4908-pinmux.patch

@@ -379,50 +379,50 @@ Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 +
 +struct bcm4908_pinctrl_function {
 +	const char *name;
-+	const char * const *groups;
++	const char **groups;
 +	const unsigned int num_groups;
 +};
 +
-+static const char * const led_0_groups[] = { "led_0_grp_a" };
-+static const char * const led_1_groups[] = { "led_1_grp_a" };
-+static const char * const led_2_groups[] = { "led_2_grp_a" };
-+static const char * const led_3_groups[] = { "led_3_grp_a" };
-+static const char * const led_4_groups[] = { "led_4_grp_a" };
-+static const char * const led_5_groups[] = { "led_5_grp_a" };
-+static const char * const led_6_groups[] = { "led_6_grp_a" };
-+static const char * const led_7_groups[] = { "led_7_grp_a" };
-+static const char * const led_8_groups[] = { "led_8_grp_a" };
-+static const char * const led_9_groups[] = { "led_9_grp_a" };
-+static const char * const led_10_groups[] = { "led_10_grp_a", "led_10_grp_b" };
-+static const char * const led_11_groups[] = { "led_11_grp_a", "led_11_grp_b" };
-+static const char * const led_12_groups[] = { "led_12_grp_a", "led_12_grp_b" };
-+static const char * const led_13_groups[] = { "led_13_grp_a", "led_13_grp_b" };
-+static const char * const led_14_groups[] = { "led_14_grp_a" };
-+static const char * const led_15_groups[] = { "led_15_grp_a" };
-+static const char * const led_16_groups[] = { "led_16_grp_a" };
-+static const char * const led_17_groups[] = { "led_17_grp_a" };
-+static const char * const led_18_groups[] = { "led_18_grp_a" };
-+static const char * const led_19_groups[] = { "led_19_grp_a" };
-+static const char * const led_20_groups[] = { "led_20_grp_a" };
-+static const char * const led_21_groups[] = { "led_21_grp_a" };
-+static const char * const led_22_groups[] = { "led_22_grp_a" };
-+static const char * const led_23_groups[] = { "led_23_grp_a" };
-+static const char * const led_24_groups[] = { "led_24_grp_a" };
-+static const char * const led_25_groups[] = { "led_25_grp_a" };
-+static const char * const led_26_groups[] = { "led_26_grp_a" };
-+static const char * const led_27_groups[] = { "led_27_grp_a" };
-+static const char * const led_28_groups[] = { "led_28_grp_a" };
-+static const char * const led_29_groups[] = { "led_29_grp_a" };
-+static const char * const led_30_groups[] = { "led_30_grp_a" };
-+static const char * const led_31_groups[] = { "led_31_grp_a", "led_31_grp_b" };
-+static const char * const hs_uart_groups[] = { "hs_uart_grp" };
-+static const char * const i2c_groups[] = { "i2c_grp_a", "i2c_grp_b" };
-+static const char * const i2s_groups[] = { "i2s_grp" };
-+static const char * const nand_ctrl_groups[] = { "nand_ctrl_grp" };
-+static const char * const nand_data_groups[] = { "nand_data_grp" };
-+static const char * const emmc_ctrl_groups[] = { "emmc_ctrl_grp" };
-+static const char * const usb0_pwr_groups[] = { "usb0_pwr_grp" };
-+static const char * const usb1_pwr_groups[] = { "usb1_pwr_grp" };
++static const char *led_0_groups[] = { "led_0_grp_a" };
++static const char *led_1_groups[] = { "led_1_grp_a" };
++static const char *led_2_groups[] = { "led_2_grp_a" };
++static const char *led_3_groups[] = { "led_3_grp_a" };
++static const char *led_4_groups[] = { "led_4_grp_a" };
++static const char *led_5_groups[] = { "led_5_grp_a" };
++static const char *led_6_groups[] = { "led_6_grp_a" };
++static const char *led_7_groups[] = { "led_7_grp_a" };
++static const char *led_8_groups[] = { "led_8_grp_a" };
++static const char *led_9_groups[] = { "led_9_grp_a" };
++static const char *led_10_groups[] = { "led_10_grp_a", "led_10_grp_b" };
++static const char *led_11_groups[] = { "led_11_grp_a", "led_11_grp_b" };
++static const char *led_12_groups[] = { "led_12_grp_a", "led_12_grp_b" };
++static const char *led_13_groups[] = { "led_13_grp_a", "led_13_grp_b" };
++static const char *led_14_groups[] = { "led_14_grp_a" };
++static const char *led_15_groups[] = { "led_15_grp_a" };
++static const char *led_16_groups[] = { "led_16_grp_a" };
++static const char *led_17_groups[] = { "led_17_grp_a" };
++static const char *led_18_groups[] = { "led_18_grp_a" };
++static const char *led_19_groups[] = { "led_19_grp_a" };
++static const char *led_20_groups[] = { "led_20_grp_a" };
++static const char *led_21_groups[] = { "led_21_grp_a" };
++static const char *led_22_groups[] = { "led_22_grp_a" };
++static const char *led_23_groups[] = { "led_23_grp_a" };
++static const char *led_24_groups[] = { "led_24_grp_a" };
++static const char *led_25_groups[] = { "led_25_grp_a" };
++static const char *led_26_groups[] = { "led_26_grp_a" };
++static const char *led_27_groups[] = { "led_27_grp_a" };
++static const char *led_28_groups[] = { "led_28_grp_a" };
++static const char *led_29_groups[] = { "led_29_grp_a" };
++static const char *led_30_groups[] = { "led_30_grp_a" };
++static const char *led_31_groups[] = { "led_31_grp_a", "led_31_grp_b" };
++static const char *hs_uart_groups[] = { "hs_uart_grp" };
++static const char *i2c_groups[] = { "i2c_grp_a", "i2c_grp_b" };
++static const char *i2s_groups[] = { "i2s_grp" };
++static const char *nand_ctrl_groups[] = { "nand_ctrl_grp" };
++static const char *nand_data_groups[] = { "nand_data_grp" };
++static const char *emmc_ctrl_groups[] = { "emmc_ctrl_grp" };
++static const char *usb0_pwr_groups[] = { "usb0_pwr_grp" };
++static const char *usb1_pwr_groups[] = { "usb1_pwr_grp" };
 +
 +static const struct bcm4908_pinctrl_function bcm4908_pinctrl_functions[] = {
 +	{ "led_0", led_0_groups, ARRAY_SIZE(led_0_groups) },