sunxi: axp: Support VBUS drive GPIO on AXP818

AXP818 supports VBUS drive function, even though the manual does not
mention it.

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>
1 file changed