[PATCH] V4L: 920: fixed autodetection of max size by if alternate setting

- Fixed autodetection of max size by if alternate setting
- Fixed some debug messages

Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>