dt-bindings: pwm: rockchip: Add more compatible strings

The compatible strings below are already in use in the Rockchip
DTSI files, but were somehow never added to a document, so add

"rockchip,rk3328-pwm"

"rockchip,rk3036-pwm", "rockchip,rk2928-pwm"

"rockchip,rk3368-pwm", "rockchip,rk3288-pwm"
"rockchip,rk3399-pwm", "rockchip,rk3288-pwm"

"rockchip,px30-pwm", "rockchip,rk3328-pwm"
"rockchip,rk3308-pwm", "rockchip,rk3328-pwm"

for PWM nodes to pwm-rockchip.yaml.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

Author: Johan Jonker

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

@@ -14,11 +14,22 @@ properties:
     oneOf:
       - const: rockchip,rk2928-pwm
       - const: rockchip,rk3288-pwm
+      - const: rockchip,rk3328-pwm
       - const: rockchip,vop-pwm
+      - items:
+          - const: rockchip,rk3036-pwm
+          - const: rockchip,rk2928-pwm
       - items:
           - enum:
+              - rockchip,rk3368-pwm
+              - rockchip,rk3399-pwm
               - rockchip,rv1108-pwm
           - const: rockchip,rk3288-pwm
+      - items:
+          - enum:
+              - rockchip,px30-pwm
+              - rockchip,rk3308-pwm
+          - const: rockchip,rk3328-pwm
 
   reg:
     maxItems: 1
@@ -46,6 +57,7 @@ if:
     compatible:
       contains:
         enum:
+          - rockchip,rk3328-pwm
           - rockchip,rv1108-pwm
 
 then: