V4L/DVB (5990): cinergyt2_suspend: don't forget to unlock cinergyt2->wq_sem

Restore unlock of cinergyt2->wq_sem, was deleted by accident.
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/dvb/cinergyT2/cinergyT2.c

@@ -1008,6 +1008,8 @@ static int cinergyt2_suspend (struct usb_interface *intf, pm_message_t state)
 	cinergyt2_sleep(cinergyt2, 1);
 	mutex_unlock(&cinergyt2->sem);
 
+	mutex_unlock(&cinergyt2->wq_sem);
+
 	return 0;
 }