usb: otg: use power supply framework to set supply type

Remove dependency on PM8921 charger driver by introducing
a new power supply framework API which allows the USB
driver to set the power supply type.

Change-Id: I990cbf72c0b49041283b12c52ac80ace0bcbd133
Signed-off-by: David Keitel <dkeitel@codeaurora.org>
1 file changed