MAINTAINERS: change BTTV status to Odd fixes

There aren't many things happening at bttv side for a long time:
Driver works, and it is stable. When new patches are submitted,
they're new boards addition for hardware I don't have. So,
move its status to Odd fixes to better reflect it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

MAINTAINERS

@@ -1728,7 +1728,7 @@ M:	Mauro Carvalho Chehab <mchehab@redhat.com>
 L:	linux-media@vger.kernel.org
 W:	http://linuxtv.org
 T:	git git://linuxtv.org/media_tree.git
-S:	Maintained
+S:	Odd fixes
 F:	Documentation/video4linux/bttv/
 F:	drivers/media/pci/bt8xx/bttv*