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/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index 4806a49..6e699d0 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -172,7 +172,7 @@
 
 static int wil_cfg80211_get_station(struct wiphy *wiphy,
 				    struct net_device *ndev,
-				    u8 *mac, struct station_info *sinfo)
+				    const u8 *mac, struct station_info *sinfo)
 {
 	struct wil6210_priv *wil = wiphy_to_wil(wiphy);
 	int rc;
@@ -671,7 +671,7 @@
 }
 
 static int wil_cfg80211_del_station(struct wiphy *wiphy,
-				    struct net_device *dev, u8 *mac)
+				    struct net_device *dev, const u8 *mac)
 {
 	struct wil6210_priv *wil = wiphy_to_wil(wiphy);