drivers: crypto: Fix precedence issue in if statement

The logical NOT operator has a higher precedence than bitwise
AND operator. Therefore to make the test in if statement
correct, add parenthesis around the operands of bitwise
AND operator.

Found using Coccinelle.

Semantic Patch Language (SmPL) used:

<smpl>

@@
expression x;
constant C;
@@

- !x & C
+ !(x & C)

</smpl>

Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>