[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/am79c961a.c b/drivers/net/arm/am79c961a.c
index 7796455..ba6bd03 100644
--- a/drivers/net/arm/am79c961a.c
+++ b/drivers/net/arm/am79c961a.c
@@ -741,12 +741,10 @@
 
 	ret = register_netdev(dev);
 	if (ret == 0) {
-		printk(KERN_INFO "%s: ether address ", dev->name);
+		DECLARE_MAC_BUF(mac);
 
-		/* Retrive and print the ethernet address. */
-		for (i = 0; i < 6; i++)
-			printk (i == 5 ? "%02x\n" : "%02x:", dev->dev_addr[i]);
-
+		printk(KERN_INFO "%s: ether address %s\n",
+		       dev->name, print_mac(mac, dev->dev_addr));
 		return 0;
 	}