wireless: move IEEE80211_NUM_ACS to ieee80211.h

This constant isn't really specific to mac80211, so move it
"up" a level to ieee80211.h
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

include/linux/ieee80211.h

@@ -185,6 +185,8 @@ static inline u16 ieee80211_sn_sub(u16 sn1, u16 sn2)
 
 /* number of user priorities 802.11 uses */
 #define IEEE80211_NUM_UPS		8
+/* number of ACs */
+#define IEEE80211_NUM_ACS		4
 
 #define IEEE80211_QOS_CTL_LEN		2
 /* 1d tag mask */

include/net/mac80211.h

@@ -147,7 +147,6 @@ enum ieee80211_ac_numbers {
 	IEEE80211_AC_BE		= 2,
 	IEEE80211_AC_BK		= 3,
 };
-#define IEEE80211_NUM_ACS	4
 
 /**
  * struct ieee80211_tx_queue_params - transmit queue configuration