usb: gadget: composite: Clear "suspended" on reset/disconnect

In some cases, one can get out of suspend with a reset or
a disconnect followed by a reconnect. Previously we would
leave a stale suspended flag set.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/composite.c

@@ -1976,6 +1976,7 @@ void composite_disconnect(struct usb_gadget *gadget)
 	 * disconnect callbacks?
 	 */
 	spin_lock_irqsave(&cdev->lock, flags);
+	cdev->suspended = 0;
 	if (cdev->config)
 		reset_config(cdev);
 	if (cdev->driver->disconnect)