dt-bindings: arm: rockchip: Add pmu compatible for rv1126

Add PMU compatible string for rockchip rv1126.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Link: https://lore.kernel.org/r/20221129075424.189655-2-jagan@edgeble.aiSigned-off-by: Heiko Stuebner <heiko@sntech.de>

Documentation/devicetree/bindings/arm/rockchip/pmu.yaml

@@ -27,6 +27,7 @@ select:
           - rockchip,rk3399-pmu
           - rockchip,rk3568-pmu
           - rockchip,rk3588-pmu
+          - rockchip,rv1126-pmu
 
   required:
     - compatible
@@ -43,6 +44,7 @@ properties:
           - rockchip,rk3399-pmu
           - rockchip,rk3568-pmu
           - rockchip,rk3588-pmu
+          - rockchip,rv1126-pmu
       - const: syscon
       - const: simple-mfd