[media] staging: media: omap24xx: fix up checkpatch error message

tcm825x.c:

fixing ERROR: Macros with complex values should be enclosed in parenthesis

Signed-off-by: Vitaly Osipov <vitaly.osipov@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>