Staging: wlan-ng: fixed coding style issues in p80211netdev.h

This is a patch to the p80211netdev.h file that fixes up warnings found
by the checkpatch.pl tool. The typedefs have been left in place as they
seem necessary.
Signed-off-by: Johan Meiring <johanmeiring@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>