ARM: tegra: enable USB2 on Tegra30 Beaver

Enable USB2 on Beaver, exposed via the mini-PCIe connector.
Signed-off-by: Eric Brower <ebrower@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

arch/arm/boot/dts/tegra30-beaver.dts

@@ -333,6 +333,15 @@ sdhci@78000600 {
 		non-removable;
 	};
 
+	usb@7d004000 {
+		status = "okay";
+	};
+
+	phy2: usb-phy@7d004000 {
+		vbus-supply = <&sys_3v3_reg>;
+		status = "okay";
+	};
+
 	usb@7d008000 {
 		status = "okay";
 	};