V4L/DVB: mx2_camera: fix comment typo

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/mx2_camera.c

@@ -461,7 +461,7 @@ static void free_buffer(struct videobuf_queue *vq, struct mx2_buffer *buf)
 
 	/*
 	 * This waits until this buffer is out of danger, i.e., until it is no
-	 * longer in STATE_QUEUED or STATE_ACTIVE
+	 * longer in state VIDEOBUF_QUEUED or VIDEOBUF_ACTIVE
 	 */
 	videobuf_waiton(vq, vb, 0, 0);