mwl8k: Configuring correct MAC address in broadcast key

While configuring the broadcast key in the hardware, in
multi-BSS environment, BSSes other than first were
incorrectly configured with the MAC address of first
BSS. Fixing it with correct MAC addresses.
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwl8k.c

@@ -4093,7 +4093,7 @@ static int mwl8k_set_key(struct ieee80211_hw *hw,
 		return -EOPNOTSUPP;
 
 	if (sta == NULL)
-		addr = hw->wiphy->perm_addr;
+		addr = vif->addr;
 	else
 		addr = sta->addr;