ARM: dts: sun8i: reference-design-tablet: Add drivevbus-supply

Add a drivevbus-supply property so that the drivevbus regulator
reports the right voltage value.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-reference-design-tablet.dtsi

@@ -105,6 +105,7 @@
 		interrupt-parent = <&nmi_intc>;
 		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
 		eldoin-supply = <&reg_dcdc1>;
+		drivevbus-supply = <&reg_vcc5v0>;
 		x-powers,drive-vbus-en;
 	};
 };