sunxi: cubietruck: Enable the USB OTG controller

The Cubietruck has a mini-USB connector that can be used to power up the
board and as an OTG connector.

Since we have already some USB host-only ports right beside this one,
enable it in gadget mode

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

configs/Cubietruck_defconfig

@@ -14,3 +14,8 @@ CONFIG_SYS_EXTRA_OPTIONS="SUNXI_GMAC,RGMII,AHCI,SATAPWR=SUNXI_GPH(12)"
 # CONFIG_CMD_FPGA is not set
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_USB_EHCI_HCD=y
+CONFIG_USB0_ID_DET="PH19"
+CONFIG_USB0_VBUS_DET="PH22"
+CONFIG_USB0_VBUS_PIN="PH17"
+CONFIG_USB_MUSB_SUNXI=y
+CONFIG_USB_MUSB_GADGET=y