[media] staging: omap24xx: fix coding style

Fix missing parentheses in macros
Errors found by checkpatch.pl

Signed-off-by: Ioana Ileana <ileana@enst.fr>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>