usb/usbtest: print super on super speed

Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/misc/usbtest.c

@@ -2308,6 +2308,9 @@ usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id)
 			case USB_SPEED_HIGH:
 				tmp = "high";
 				break;
+			case USB_SPEED_SUPER:
+				tmp = "super";
+				break;
 			default:
 				tmp = "unknown";
 				break;