ARM: dts: Enable USB node for exynos3250-monk

This patch adds device tree node for hsotg to control USB 2.0 Device.
Signed-off-by: NJaewon Kim <jaewon02.kim@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

arch/arm/boot/dts/exynos3250-monk.dts

@@ -134,6 +134,16 @@
 	};
 };
 
+&exynos_usbphy {
+	status = "okay";
+};
+
+&hsotg {
+	vusb_d-supply = <&ldo15_reg>;
+	vusb_a-supply = <&ldo12_reg>;
+	status = "okay";
+};
+
 &i2c_0 {
 	#address-cells = <1>;
 	#size-cells = <0>;