dt-bindings: leds: pwm-multicolor: document max-brigthness

The Multicolor PWM LED uses max-brigthness property (in the example and
in the driver), so document it to fixi dt_binding_check warning like:

  leds/leds-pwm-multicolor.example.dtb:
    led-controller: multi-led: Unevaluated properties are not allowed ('max-brightness' was unexpected)

Reported-by: Rob Herring <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Pavel Machek <[email protected]>
1 file changed