[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/fec.c b/drivers/net/fec.c
index 4419c3c..2b57820 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -2635,6 +2635,7 @@
 {
 	struct net_device *dev;
 	int i, j, err;
+	DECLARE_MAC_BUF(mac);
 
 	printk("FEC ENET Version 0.2\n");
 
@@ -2653,10 +2654,8 @@
 			return -EIO;
 		}
 
-		printk("%s: ethernet ", dev->name);
-		for (j = 0; (j < 5); j++)
-			printk("%02x:", dev->dev_addr[j]);
-		printk("%02x\n", dev->dev_addr[5]);
+		printk("%s: ethernet %s\n",
+		       dev->name, print_mac(mac, dev->dev_addr));
 	}
 	return 0;
 }