media: s5p-mfc:fix usage of Block comment alignment

Fix usage of block comment alignment in drivers/media/platform/samsung/
s5p-mfc/s5p_mfc.c as recommended by scripts/checkpatch.pl.

Signed-off-by: Aakarsh Jain <aakarsh.jain@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>