staging: wlan-ng: fix line style issue in macro WLAN_GET_FC_FSTYPE

This patch fix the following checkpatch.pl script warning:
WARNING: line over 80 characters

It also add spaces between or operators inside the macro to
comply with the standard kernel coding style.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>