nl80211: update includes to L bionic and add unhandled attributes to nl80211

Goal behind this update was to do the following:
1. update nl80211 header to current bionic for possible future updates
2. fix wifi capabilities query which was failing due to missing
   attribute definitions

NOTE: you *should* also update your kernel in the same way to keep it in sync
with the sources used in the wlan modules.
Reference commit: http://review.cyanogenmod.org/#/c/80359/

Change-Id: Id271cd270c86db9a6c29fa55f4af7969cfe27e4d
Signed-off-by: Hashcode <hashcode0f@gmail.com>