mac80211: 802.11w - STA flag for MFP

Add flags for setting STA entries and struct ieee80211_if_sta to
indicate whether management frame protection (MFP) is used.

Signed-off-by: Jouni Malinen <j@w1.fi>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 23c0ab7..6619ed1 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -112,12 +112,14 @@
  * @STATION_FLAG_SHORT_PREAMBLE: station is capable of receiving frames
  *	with short preambles
  * @STATION_FLAG_WME: station is WME/QoS capable
+ * @STATION_FLAG_MFP: station uses management frame protection
  */
 enum station_flags {
 	STATION_FLAG_CHANGED		= 1<<0,
 	STATION_FLAG_AUTHORIZED		= 1<<NL80211_STA_FLAG_AUTHORIZED,
 	STATION_FLAG_SHORT_PREAMBLE	= 1<<NL80211_STA_FLAG_SHORT_PREAMBLE,
 	STATION_FLAG_WME		= 1<<NL80211_STA_FLAG_WME,
+	STATION_FLAG_MFP		= 1<<NL80211_STA_FLAG_MFP,
 };
 
 /**