dt-bindings: pwm: rockchip: Add description for rk3568

Add "rockchip,rk3568-pwm", "rockchip,rk3328-pwm" compatible strings for
PWM nodes found on a rk3568 platform.

Signed-off-by: Liang Chen <[email protected]>
Signed-off-by: Heiko Stuebner <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

Author: Liang Chen

Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml

@@ -29,6 +29,7 @@ properties:
           - enum:
               - rockchip,px30-pwm
               - rockchip,rk3308-pwm
+              - rockchip,rk3568-pwm
           - const: rockchip,rk3328-pwm
 
   reg: