devicetree: Add TI-NSPIRE USB OTG support to device tree

Signed-off-by: Daniel Tang <dt.tangr@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/boot/dts/nspire-cx.dts b/arch/arm/boot/dts/nspire-cx.dts
index 375b924..08e0b81 100644
--- a/arch/arm/boot/dts/nspire-cx.dts
+++ b/arch/arm/boot/dts/nspire-cx.dts
@@ -69,6 +69,10 @@
 	0x0709001d 	0x070a0033 	>;
 };
 
+&vbus_reg {
+	gpio = <&gpio 2 0>;
+};
+
 / {
 	model = "TI-NSPIRE CX";
 	compatible = "ti,nspire-cx";