arm64: dts: imx8mp-venice-gw74xx: add cpu-supply node for cpufreq

Add regulator config for cpu-supply in order to support cpufreq.
Signed-off-by: NTim Harvey <tharvey@gateworks.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx.dts

@@ -142,6 +142,22 @@
 	};
 };
 
+&A53_0 {
+	cpu-supply = <&reg_arm>;
+};
+
+&A53_1 {
+	cpu-supply = <&reg_arm>;
+};
+
+&A53_2 {
+	cpu-supply = <&reg_arm>;
+};
+
+&A53_3 {
+	cpu-supply = <&reg_arm>;
+};
+
 /* off-board header */
 &ecspi2 {
 	pinctrl-names = "default";
@@ -362,7 +378,7 @@
 				regulator-ramp-delay = <3125>;
 			};
 
-			BUCK2 {
+			reg_arm: BUCK2 {
 				regulator-name = "BUCK2";
 				regulator-min-microvolt = <720000>;
 				regulator-max-microvolt = <1025000>;