sunxi: Enable USB host support for Sinlinx SinA33

Sinlinx SinA33 has 1 USB host port. Enable EHCI_HCD support for it.
Also enable USB mass storage support so we can access USB sticks.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

configs/Sinlinx_SinA33_defconfig

@@ -10,3 +10,4 @@ CONFIG_SPL=y
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
+CONFIG_USB_EHCI_HCD=y