usb: common: of_usb_get_dr_mode to usb_get_dr_mode

By using the unified device property interface, the function
can be made available for all platforms and not just the
ones using DT.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/musb_dsps.c

@@ -666,7 +666,7 @@ static int get_musb_port_mode(struct device *dev)
 {
 	enum usb_dr_mode mode;
 
-	mode = of_usb_get_dr_mode(dev->of_node);
+	mode = usb_get_dr_mode(dev);
 	switch (mode) {
 	case USB_DR_MODE_HOST:
 		return MUSB_PORT_MODE_HOST;