media: dt-bindings: media: rockchip-rga: add power-domains property

In the old txt situation we add/describe only properties that are used
by the driver/hardware itself. With yaml it also filters things in a
node that are used by other drivers like 'power-domains' for rk3399,
so add it to 'rockchip-rga.yaml'.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/devicetree/bindings/media/rockchip-rga.yaml

@@ -39,6 +39,9 @@ properties:
       - const: hclk
       - const: sclk
 
+  power-domains:
+    maxItems: 1
+
   resets:
     maxItems: 3
 
@@ -63,6 +66,7 @@ examples:
   - |
     #include <dt-bindings/clock/rk3399-cru.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/power/rk3399-power.h>
     rga: rga@ff680000 {
       compatible = "rockchip,rk3399-rga";
       reg = <0xff680000 0x10000>;
@@ -71,6 +75,7 @@ examples:
                <&cru HCLK_RGA>,
                <&cru SCLK_RGA_CORE>;
       clock-names = "aclk", "hclk", "sclk";
+      power-domains = <&power RK3399_PD_RGA>;
       resets = <&cru SRST_RGA_CORE>,
                <&cru SRST_A_RGA>,
                <&cru SRST_H_RGA>;