staging: media: atomisp: Added spaces around arithmetic and bitwise operators.

Added spaces around arithmetic operators (/, *, +) and bitwise operators
(<<, >>), to fix the checkpatch issue.

Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>