V4L/DVB (4253): IVTV VBI format description too long.

Format description was cut off. It's been shortened.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/v4l2-common.c

@@ -1103,7 +1103,7 @@ const char **v4l2_ctrl_get_menu(u32 id)
 	};
 	static const char *mpeg_stream_vbi_fmt[] = {
 		"No VBI",
-		"VBI in private packets, IVTV format",
+		"Private packet, IVTV format",
 		NULL
 	};