ARM: tegra: Add micro-USB A/B port on Jetson TK1

Run the micro-USB A/B port on Jetson TK1 in host mode by default.
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra124-jetson-tk1.dts

@@ -1782,6 +1782,12 @@ sata-0 {
 		};
 
 		ports {
+			/* Micro A/B */
+			usb2-0 {
+				status = "okay";
+				mode = "host";
+			};
+
 			/* Mini PCIe */
 			usb2-1 {
 				status = "okay";