MFP: Fix SA Query Action Category

IEEE 802.11w/D7.0 incorrectly changed the Action Category from 8 to 7
when renaming Ping to SA Query. Category 7 is reserved for HT (IEEE
802.11n) and IEEE 802.11w will need to continue to use the category 8
that was allocated for it.

src/common/ieee802_11_defs.h

@@ -214,7 +214,7 @@
 #define WLAN_ACTION_BLOCK_ACK 3
 #define WLAN_ACTION_RADIO_MEASUREMENT 5
 #define WLAN_ACTION_FT 6
-#define WLAN_ACTION_SA_QUERY 7
+#define WLAN_ACTION_SA_QUERY 8
 #define WLAN_ACTION_WMM 17
 
 /* SA Query Action frame (IEEE 802.11w/D7.0, 7.4.9) */