ARM: dts: dra71-evm: Add VBUS GPIO to USB1/USB2 extcon

The board has USB VBUS detection available over GPIO. Plug it to
extcon node of USB1 and USB2 ports.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/dra71-evm.dts

@@ -265,3 +265,11 @@ &hdmi {
 	/* Supplied by VDA_1V8_PHY */
 	vdda_video-supply = <&lp8732_ldo1_reg>;
 };
+
+&extcon_usb1 {
+	vbus-gpio = <&pcf_lcd 14 GPIO_ACTIVE_HIGH>;
+};
+
+&extcon_usb2 {
+	vbus-gpio = <&pcf_lcd 15 GPIO_ACTIVE_HIGH>;
+};