generic: add leds_st1202 patch to fix NULL pointer access

generic: add leds_st1202 patch to fix NULL pointer access

As per @KanjiMonster comment: st1202_dt_init() calls devm_led_classdev_register_ext() before the internal data structures are properly setup, so the leds become visible to user space while being partially initialized, leading to a window where trying to access them causes a NULL pointer access.

Move devm_led_classdev_register_ext() to the last thing to happen during initialization.

Signed-off-by: Manuel Fombuena <fombuena@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/17543
Signed-off-by: Robert Marko <robimarko@gmail.com>