ARM: uniphier: enable DWC3 xHCI driver

Enable CONFIGs for the DWC3 core and the UniPhier specific glue layer.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/configs/uniphier_v8_defconfig b/configs/uniphier_v8_defconfig
index 796839b..31dd9b3 100644
--- a/configs/uniphier_v8_defconfig
+++ b/configs/uniphier_v8_defconfig
@@ -45,4 +45,6 @@
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_DWC3=y
+CONFIG_USB_DWC3_UNIPHIER=y
 CONFIG_USB_STORAGE=y