arm/dts: 8974: Add qpnp-vadc phandle for usb3 device node

Add qpnp-vadc phandle for usb3 device node which is required
to get usb power supply's VOLTAGE_NOW property.

CRs-Fixed: 599547
Change-Id: Ia01e0620ec9a6ca28adb9e71ccac030a33a41642
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974pro-ac-pma8084-pm8941.dtsi b/arch/arm/boot/dts/msm8974pro-ac-pma8084-pm8941.dtsi
index dc438bb..bc7ecd2 100644
--- a/arch/arm/boot/dts/msm8974pro-ac-pma8084-pm8941.dtsi
+++ b/arch/arm/boot/dts/msm8974pro-ac-pma8084-pm8941.dtsi
@@ -102,6 +102,7 @@
 	vbus_dwc3-supply = <&pm8941_mvs1>;
 	qcom,misc-ref = <&pm8941_misc>;
 	dwc_usb3-adc_tm = <&pm8941_adc_tm>;
+	qcom,usbin-vadc = <&pm8941_vadc>;
 	interrupt-map-mask = <0x0 0xffffffff>;
 	interrupt-map = <0x0 0 &intc 0 133 0
 			0x0 1 &spmi_bus 0x0 0x2 0x9 0x0>;