staging: media: atomisp: Removed unnecessary parentheses.

Removed parentheses on the right hand side of assignment, as they are
not required. The following coccinelle script is used to fix this issue:

@@
binary operator op = {<<,>>,+,/};
local idexpression id;
expression e1, e2;
@@

id =
-(
e1 op e2
-)

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