Most of otg/otg.c is not otg specific, but phy specific, so move it
to the phy directory.
Tested-by: NSteffen Trumtrar <s.trumtrar@pengutronix.de>
Reported-by: NKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: NFelipe Balbi <balbi@ti.com>