linux-phytec-ti

mfd: axp20x: Add axp20x-usb-power-supply for axp22x pmics

Add axp20x-usb-power-supply for axp22x pmics.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>