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/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 39d22a1..d2a9a08 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -517,7 +517,7 @@
 				 u8 key_index, bool unicast, bool multicast);
 
 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
-					u8 *mac, struct station_info *sinfo);
+			     const u8 *mac, struct station_info *sinfo);
 
 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 			       int idx, u8 *mac, struct station_info *sinfo);
@@ -2490,7 +2490,7 @@
 }
 
 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
-					u8 *mac, struct station_info *sinfo)
+			     const u8 *mac, struct station_info *sinfo)
 {
 	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
 	struct usbnet *usbdev = priv->usbdev;