net: 3com: slight optimization of addr compare

Use possibly more efficient ether_addr_equal
to instead of memcmp.

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/3com/3c509.c

@@ -252,8 +252,7 @@ static int el3_isa_id_sequence(__be16 *phys_addr)
 		for (i = 0; i < el3_cards; i++) {
 			struct el3_private *lp = netdev_priv(el3_devs[i]);
 			if (lp->type == EL3_PNP &&
-			    !memcmp(phys_addr, el3_devs[i]->dev_addr,
-				    ETH_ALEN)) {
+			    ether_addr_equal(phys_addr, el3_devs[i]->dev_addr)) {
 				if (el3_debug > 3)
 					pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
 						phys_addr[0] & 0xff, phys_addr[0] >> 8,