usb: otg: mv_otg: Start using struct usb_otg

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

[ balbi@ti.com : fixed a compile error on isp1704_charger.c ]

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/otg/mv_otg.h b/drivers/usb/otg/mv_otg.h
index a74ee07..8a9e351 100644
--- a/drivers/usb/otg/mv_otg.h
+++ b/drivers/usb/otg/mv_otg.h
@@ -136,7 +136,7 @@
 };
 
 struct mv_otg {
-	struct usb_phy otg;
+	struct usb_phy phy;
 	struct mv_otg_ctrl otg_ctrl;
 
 	/* base address */