zd1211rw: slight optimization of addr compare

Use possibly more efficient ether_addr_equal
instead of memcmp.

Cc: Daniel Drake <[e-mail]>
Cc: Ulrich Kunitz <[e-mail]>
Cc: "John W. Linville" <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Tan Xiaojun <[e-mail]>
Signed-off-by: Ding Tianhong <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/wireless/zd1211rw/zd_mac.c

···
 		tx_hdr = (struct ieee80211_hdr *)skb->data;
 
 		/* we skip all frames not matching the reported destination */
-		if (unlikely(memcmp(tx_hdr->addr1, tx_status->mac, ETH_ALEN))) {
+		if (unlikely(!ether_addr_equal(tx_hdr->addr1, tx_status->mac)))
 			continue;
-		}
 
 		/* we skip all frames not matching the reported final rate */
 
···
 		    continue;
 
 		tx_hdr = (struct ieee80211_hdr *)skb->data;
-		if (likely(!memcmp(tx_hdr->addr2, rx_hdr->addr1, ETH_ALEN)))
+		if (likely(ether_addr_equal(tx_hdr->addr2, rx_hdr->addr1)))
 		{
 			found = 1;
 			break;