[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/etherh.c b/drivers/net/arm/etherh.c
index 5d093b3..00081d2 100644
--- a/drivers/net/arm/etherh.c
+++ b/drivers/net/arm/etherh.c
@@ -648,6 +648,7 @@
 	struct net_device *dev;
 	struct etherh_priv *eh;
 	int i, ret;
+	DECLARE_MAC_BUF(mac);
 
 	etherh_banner();
 
@@ -745,11 +746,8 @@
 	if (ret)
 		goto free;
 
-	printk(KERN_INFO "%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(KERN_INFO "%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);