staging: wlags49_h2: wl_netdev.h: sorts out spacing issues

This commit fixes issues regarding spacing around parentheses. The
checkpatch.pl tool reports that this file has no further styling
issues.

Signed-off-by: Johan Meiring <johanmeiring@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>