sunxi: Ippo_q8h defconfigs: Enable otg vbus detection using AXP223 PMIC

Use the AXP223 PMIC to detect VBUS for musb otg support.

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