V4L: ivtv: fix udma yuv bug

V4L: ivtv: fix udma yuv bug

Based on cb50f548c0ee9b2aac39743fc4021a7188825a98 in mainline

[PATCH] V4L: ivtv: fix udma yuv bug

Using udma yuv causes the driver to become locked into that mode. This
prevents use of the mpeg decoder & non-udma yuv output.

This patch clears the operating mode when the device is closed.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>