arm64: dts: allwinner: axp803: add USB power supply node

The AXP803 has a VBUS power input. Add a device node for it,
now that we support it.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm64/boot/dts/allwinner/axp803.dtsi

@@ -185,4 +185,10 @@ reg_drivevbus: drivevbus {
 			status = "disabled";
 		};
 	};
+
+	usb_power_supply: usb-power-supply {
+		compatible = "x-powers,axp803-usb-power-supply",
+			     "x-powers,axp813-usb-power-supply";
+		status = "disabled";
+	};
 };