wl3501_cs: use is_broadcast_ether_addr() instead of memcmp()

Using is_broadcast_ether_addr() instead of directly use
memcmp() to determine if the ethernet address is broadcast
address.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl3501_cs.c

@@ -1520,13 +1520,12 @@ static int wl3501_set_wap(struct net_device *dev, struct iw_request_info *info,
 			  union iwreq_data *wrqu, char *extra)
 {
 	struct wl3501_card *this = netdev_priv(dev);
-	static const u8 bcast[ETH_ALEN] = { 255, 255, 255, 255, 255, 255 };
 	int rc = -EINVAL;
 
 	/* FIXME: we support other ARPHRDs...*/
 	if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
 		goto out;
-	if (!memcmp(bcast, wrqu->ap_addr.sa_data, ETH_ALEN)) {
+	if (is_broadcast_ether_addr(wrqu->ap_addr.sa_data)) {
 		/* FIXME: rescan? */
 	} else
 		memcpy(this->bssid, wrqu->ap_addr.sa_data, ETH_ALEN);