[NET]: Introduce and use print_mac() and DECLARE_MAC_BUF()

This is nicer than the MAC_FMT stuff.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/arm/ether3.c b/drivers/net/arm/ether3.c
index 4a91474..67e96ae 100644
--- a/drivers/net/arm/ether3.c
+++ b/drivers/net/arm/ether3.c
@@ -775,7 +775,8 @@
 {
 	const struct ether3_data *data = id->data;
 	struct net_device *dev;
-	int i, bus_type, ret;
+	int bus_type, ret;
+	DECLARE_MAC_BUF(mac);
 
 	ether3_banner();
 
@@ -858,9 +859,8 @@
 	if (ret)
 		goto free;
 
-	printk("%s: %s in slot %d, ", dev->name, data->name, ec->slot_no);
-	for (i = 0; i < 6; i++)
-		printk("%2.2x%c", dev->dev_addr[i], i == 5 ? '\n' : ':');
+	printk("%s: %s in slot %d, %s\n",
+	       dev->name, data->name, ec->slot_no, print_mac(mac, dev->dev_addr));
 
 	ecard_set_drvdata(ec, dev);
 	return 0;