ARM: BCM5301X: Netgear R6250 add USB GPIO

Add GPIO number which is needed to activate the USB power supply.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm4708-netgear-r6250.dts

@@ -24,6 +24,17 @@ memory {
 		reg = <0x00000000 0x08000000>;
 	};
 
+	axi@18000000 {
+		usb3@23000 {
+			reg = <0x00023000 0x1000>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			vcc-gpio = <&chipcommon 0 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";