Merge patch series "led: add function naming option from linux"

Merge patch series "led: add function naming option from linux"

Heiko Schocher <hs@denx.de> says:

In linux we have the option to create the name of a led
optionally through the following properties:

- function
- color
- function-enumerator

This series adds support for parsing this properties if there
is no label property.

Link: https://lore.kernel.org/r/20250128135246.74838-1-hs@denx.de
[trini: Document name parameter in led.h]