usb/usbtest: print super on super speed

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 58a5685..7e74741 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -2308,6 +2308,9 @@
 			case USB_SPEED_HIGH:
 				tmp = "high";
 				break;
+			case USB_SPEED_SUPER:
+				tmp = "super";
+				break;
 			default:
 				tmp = "unknown";
 				break;