arm64: dts: meson: odroid-c2: Add missing linking regulator to usb bus

Add missing linking regulator node to usb bus for power usb devices.

Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
[ khilman: minor typo fixup ]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts

@@ -36,8 +36,15 @@ usb_otg_pwr: regulator-usb-pwrs {
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 
+		/*
+		 * signal name from schematics: PWREN
+		 */
 		gpio = <&gpio_ao GPIOAO_5 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
+		/*
+		 * signal name from schematics: USB_POWER
+		 */
+		vin-supply = <&p5v0>;
 	};
 
 	leds {