iwlwifi: fix iwl_mac_set_key and iwl3945_mac_set_key

This patch fix iwl_mac_set_key function changed in patch
"mac80211: clean up set_key callback"

1. removing 'static' const u8 *addr' that can possible cause
conflict when two or more NICs are present in the system.
2. simplifying functions

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index be14cd9..7e0baf6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2998,12 +2998,10 @@
 			   struct ieee80211_key_conf *key)
 {
 	struct iwl_priv *priv = hw->priv;
-	int ret = 0;
-	u8 sta_id = IWL_INVALID_STATION;
-	u8 is_default_wep_key = 0;
-	static const u8 bcast_addr[ETH_ALEN] =
-		{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, };
-	static const u8 *addr;
+	const u8 *addr;
+	int ret;
+	u8 sta_id;
+	bool is_default_wep_key = false;
 
 	IWL_DEBUG_MAC80211("enter\n");
 
@@ -3011,9 +3009,7 @@
 		IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
 		return -EOPNOTSUPP;
 	}
-
-	addr = sta ? sta->addr : bcast_addr;
-
+	addr = sta ? sta->addr : iwl_bcast_addr;
 	sta_id = iwl_find_station(priv, addr);
 	if (sta_id == IWL_INVALID_STATION) {
 		IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",