ath: move ath_bcast_mac to common header

This is used by both ath5k and ath9k to set the first bssid mask.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index 9c6ab53..a28d795 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -815,7 +815,7 @@
 
 	SET_IEEE80211_PERM_ADDR(hw, mac);
 	/* All MAC address bits matter for ACKs */
-	memset(sc->bssidmask, 0xff, ETH_ALEN);
+	memcpy(sc->bssidmask, ath_bcast_mac, ETH_ALEN);
 	ath5k_hw_set_bssid_mask(sc->ah, sc->bssidmask);
 
 	regulatory->current_rd = ah->ah_capabilities.cap_eeprom.ee_regdomain;