usb: phy: move bulk of otg/otg.c to phy/phy.c

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

drivers/usb/phy/Makefile

@@ -4,6 +4,7 @@
 
 ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG
 
+obj-$(CONFIG_USB_OTG_UTILS)		+= phy.o
 obj-$(CONFIG_OMAP_USB2)			+= omap-usb2.o
 obj-$(CONFIG_OMAP_USB3)			+= omap-usb3.o
 obj-$(CONFIG_OMAP_CONTROL_USB)		+= omap-control-usb.o