usb: otg: msm: Start using struct usb_otg

Use struct usb_otg members with OTG specific functions instead
of usb_phy members.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

include/linux/usb/msm_hsusb.h

@@ -160,7 +160,7 @@ struct msm_otg_platform_data {
  *               detection process.
  */
 struct msm_otg {
-	struct usb_phy otg;
+	struct usb_phy phy;
 	struct msm_otg_platform_data *pdata;
 	int irq;
 	struct clk *clk;