dt-bindings: leds: Add regulator-led binding

The regulator is a LED connected directly to a regulator and with
its brightness controlled by the voltage of the regulator.

Cc: [email protected]
Cc: Antonio Ospite <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Pavel Machek <[email protected]>
1 file changed