lantiq: Add sensible hw-defaults for dwc2

Lantiq driver does not work with autodetected fifo sizes so use ones
from original ltq-hcd driver in dwc2. Other values can be
autodetected.

Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>

SVN-Revision: 44674

target/linux/lantiq/patches-3.18/0041-USB-DWC2-add-ltq-params.patch

@@ -0,0 +1,45 @@
+--- a/drivers/usb/dwc2/platform.c	2015-02-09 19:37:34.553109992 +0200
++++ b/drivers/usb/dwc2/platform.c	2015-02-09 19:38:30.090111260 +0200
+@@ -105,6 +105,34 @@
+ 	.uframe_sched			= -1,
+ };
+ 
++static const struct dwc2_core_params params_ltq = {
++	.otg_cap			= -1,
++	.otg_ver			= -1,
++	.dma_enable			= -1,
++	.dma_desc_enable		= -1,
++	.speed				= -1,
++	.enable_dynamic_fifo		= -1,
++	.en_multiple_tx_fifo		= -1,
++	.host_rx_fifo_size		= 240,	/* 240 DWORDs */
++	.host_nperio_tx_fifo_size	= 240,	/* 240 DWORDs */
++	.host_perio_tx_fifo_size	= 32,	/* 32 DWORDs */
++	.max_transfer_size		= -1,
++	.max_packet_count		= -1,
++	.host_channels			= -1,
++	.phy_type			= -1,
++	.phy_utmi_width			= -1,
++	.phy_ulpi_ddr			= -1,
++	.phy_ulpi_ext_vbus		= -1,
++	.i2c_enable			= -1,
++	.ulpi_fs_ls			= -1,
++	.host_support_fs_ls_low_power	= -1,
++	.host_ls_low_power_phy_clk	= -1,
++	.ts_dline			= -1,
++	.reload_ctl			= -1,
++	.ahbcfg				= -1,
++	.uframe_sched			= -1,
++};
++
+ /**
+  * dwc2_driver_remove() - Called when the DWC_otg core is unregistered with the
+  * DWC_otg driver
+@@ -128,6 +156,7 @@
+ static const struct of_device_id dwc2_of_match_table[] = {
+ 	{ .compatible = "brcm,bcm2835-usb", .data = &params_bcm2835 },
+ 	{ .compatible = "rockchip,rk3066-usb", .data = &params_rk3066 },
++	{ .compatible = "lantiq,ifxhcd-xrx200-dwc2", .data = &params_ltq },
+ 	{ .compatible = "snps,dwc2", .data = NULL },
+ 	{},
+ };