mach-ux500: activate USB in the U8500 defconfig

Activate the new USB stuff so we atleast get some compile
coverage for this stuff.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/configs/u8500_defconfig

@@ -67,7 +67,11 @@ CONFIG_AB8500_CORE=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_AB8500=y
 # CONFIG_HID_SUPPORT is not set
-# CONFIG_USB_SUPPORT is not set
+CONFIG_USB_MUSB_HDRC=y
+CONFIG_USB_GADGET_MUSB_HDRC=y
+CONFIG_MUSB_PIO_ONLY=y
+CONFIG_USB_GADGET=y
+CONFIG_AB8500_USB=y
 CONFIG_MMC=y
 CONFIG_MMC_ARMMMCI=y
 CONFIG_NEW_LEDS=y