ARM: multi_v7: Enable Tegra XUSB controller in defconfig

Enable the XUSB pad controller and XUSB controller (implementing an XHCI
interface) in the multi_v7 default configuration.

The XUSB pad controller is built-in because it is needed by PCIe, which
in turn provides the onboard ethernet used for network boot on a Jetson
TK1.
Signed-off-by: NThierry Reding <treding@nvidia.com>

arch/arm/configs/multi_v7_defconfig

@@ -592,6 +592,7 @@ CONFIG_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_MVEBU=y
 CONFIG_USB_XHCI_RCAR=m
+CONFIG_USB_XHCI_TEGRA=m
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_MSM=m
 CONFIG_USB_EHCI_EXYNOS=y
@@ -800,6 +801,7 @@ CONFIG_PHY_STIH407_USB=y
 CONFIG_PHY_SUN4I_USB=y
 CONFIG_PHY_SUN9I_USB=y
 CONFIG_PHY_SAMSUNG_USB2=m
+CONFIG_PHY_TEGRA_XUSB=y
 CONFIG_NVMEM=y
 CONFIG_NVMEM_SUNXI_SID=y
 CONFIG_BCM2835_MBOX=y