mwl8k: use ether_addr_equal_64bits

Ether_addr_equal_64bits is more efficient than ether_addr_equal, and can be
used when each argument is an array within a structure that contains at
least two bytes of data beyond the array.

The structures involved are:
ieee80211_hdr defined in include/linux/ieee80211.h and
mwl8k_priv defined in drivers/net/wireless/mwl8k.c

This was done using Coccinelle (http://coccinelle.lip6.fr/).
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwl8k.c

@@ -1258,7 +1258,7 @@ mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
 {
 	return priv->capture_beacon &&
 		ieee80211_is_beacon(wh->frame_control) &&
-		ether_addr_equal(wh->addr3, priv->capture_bssid);
+		ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
 }
 
 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,