Currently, if the phy driver does not implement the led_brightness_set
function, setting the LED will result in the following error message:
leds mdio-bus:*:green:lan: Setting an LED's brightness failed (-524)
Backport a patch to silence this error message.
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://github.com/openwrt/openwrt/pull/18080
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>