Required properties for power domain controller:
 - compatible: Should be one of the following.
+       "rockchip,px30-power-controller" - for PX30 SoCs.
        "rockchip,rk3036-power-controller" - for RK3036 SoCs.
        "rockchip,rk3128-power-controller" - for RK3128 SoCs.
        "rockchip,rk3228-power-controller" - for RK3228 SoCs.
 
 Required properties for power domain sub nodes:
 - reg: index of the power domain, should use macros in:
+       "include/dt-bindings/power/px30-power.h" - for PX30 type power domain.
        "include/dt-bindings/power/rk3036-power.h" - for RK3036 type power domain.
        "include/dt-bindings/power/rk3128-power.h" - for RK3128 type power domain.
        "include/dt-bindings/power/rk3228-power.h" - for RK3228 type power domain.
 containing a phandle to the power device node and an index specifying which
 power domain to use.
 The index should use macros in:
+       "include/dt-bindings/power/px30-power.h" - for px30 type power domain.
        "include/dt-bindings/power/rk3036-power.h" - for rk3036 type power domain.
        "include/dt-bindings/power/rk3128-power.h" - for rk3128 type power domain.
        "include/dt-bindings/power/rk3128-power.h" - for rk3228 type power domain.