[PATCH] v4l: 758: some improvements at msp3400 c from ivtv code

- Some improvements at msp3400.c from ivtv code.
Signed-off-by: NMauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>