media: staging: atomisp: fixed trivial coding style issue

Below was the trival error flagged by checkpatch.pl:
ERROR: space prohibited after that open parenthesis '('

Signed-off-by: Shy More <smklearn@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>