Upstream seems to be using led-sources instead of custom properties.
Code mostly taken from mt76.
Changed all(few) users of qca,led_pin to use the new format.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/18805
Signed-off-by: Robert Marko <robimarko@gmail.com>