arm64: dts: qcom: ipq8074: add USB power domains

Add USB power domains provided by GCC GDSCs.
Add the required #power-domain-cells to the GCC as well.
Signed-off-by: Robert Marko <robimarko@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220515210048.483898-11-robimarko@gmail.com

arch/arm64/boot/dts/qcom/ipq8074.dtsi

@@ -347,6 +347,7 @@ gcc: gcc@1800000 {
 			compatible = "qcom,gcc-ipq8074";
 			reg = <0x01800000 0x80000>;
 			#clock-cells = <0x1>;
+			#power-domain-cells = <1>;
 			#reset-cells = <0x1>;
 		};
 
@@ -575,6 +576,8 @@ usb_0: usb@8af8800 {
 						<133330000>,
 						<19200000>;
 
+			power-domains = <&gcc USB0_GDSC>;
+
 			resets = <&gcc GCC_USB0_BCR>;
 			status = "disabled";
 
@@ -615,6 +618,8 @@ usb_1: usb@8cf8800 {
 						<133330000>,
 						<19200000>;
 
+			power-domains = <&gcc USB1_GDSC>;
+
 			resets = <&gcc GCC_USB1_BCR>;
 			status = "disabled";