staging: wilc1000: remove parentheses on right hand side of assignment

Remove the unnecessary parens on right hand side of assignment.

Found using Coccinelle:
@@
identifier x;
expression e1, e2;
@@
- x = (e1 << e2)
+ x = e1 << e2

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>