usb: musb: remove duplicated port mode enum

include/linux/usb/musb.h already defines enum for musb port mode, so
remove the duplicate in musb_core.h and use the definition in musb.h.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 71c5835..d082b0c 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1823,7 +1823,7 @@ int musb_gadget_setup(struct musb *musb)
 
 void musb_gadget_cleanup(struct musb *musb)
 {
-	if (musb->port_mode == MUSB_PORT_MODE_HOST)
+	if (musb->port_mode == MUSB_HOST)
 		return;
 
 	cancel_delayed_work_sync(&musb->gadget_work);