Staging: wlan-ng: fix coding style issues in p80211types.h

This is a patch that fixes various coding style issues in p80211types.h.
The typedef declarations have been kept as they seem necessary.
Signed-off-by: NJohan Meiring <johanmeiring@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>