Fwiw, it looks like that this file is already in uboot:
https://gitlab.denx.de/u-boot/u-boot/-/blob/master/include/dt-bindings/leds/common.h
commit 423aabc43613b58d7b91a28a94791ab937afcd90
Author: Jerome Brunet <jbru...@baylibre.com>
Date: Thu Mar 5 12:12:35 2020 +0100
dt-bindings: leds: import common led bindings from linux v5.5
Import the common leds bindings definition from linux
d5226fa6dbae ("Linux 5.5")
Reviewed-by: Neil Armstrong <narmstr...@baylibre.com>
Signed-off-by: Jerome Brunet <jbru...@baylibre.com>
Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
Arnaud
