cfg80211: constify MAC addresses in cfg80211 ops

This propagates through all the drivers and mac80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index c2c6f46..1fffbde 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -1759,7 +1759,7 @@
 }
 
 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
-			      u8 *mac, struct station_info *sinfo)
+			      const u8 *mac, struct station_info *sinfo)
 {
 	struct ath6kl *ar = ath6kl_priv(dev);
 	struct ath6kl_vif *vif = netdev_priv(dev);
@@ -2975,7 +2975,7 @@
 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 
 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
-			      u8 *mac)
+			      const u8 *mac)
 {
 	struct ath6kl *ar = ath6kl_priv(dev);
 	struct ath6kl_vif *vif = netdev_priv(dev);
@@ -2986,7 +2986,8 @@
 }
 
 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
-				 u8 *mac, struct station_parameters *params)
+				 const u8 *mac,
+				 struct station_parameters *params)
 {
 	struct ath6kl *ar = ath6kl_priv(dev);
 	struct ath6kl_vif *vif = netdev_priv(dev);