sunxi-usbc0: Fix sunxi-usbc0 never being enabled

My commit 01e75a86218f5d75d36212efd19ba831e1ac14c4
"sunxi-hcd0: Cleanup Kconfig", accidentally made it so that the driver for
sunxi-usbc0 would never be enabled in the kernel .config, since it made it
depend on the non existent ARCH_SUNXI, oops!

This commit fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi-usbc0: Properly power up vbus from pin_init when the gpio is inverted

The Auxtek-t003 has an inverted vbus gpio control. sw_hcd_board_set_vbus deals
properly with this, but pin_init does not, this fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi-usbc0: Properly intialize hcd0 when running in host-only mode

Signed-off-by: Hans de Goede <hdegoede@redhat.com>