[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/cris/eth_v10.c b/drivers/net/cris/eth_v10.c
index 5bdf5ca..314b2f6 100644
--- a/drivers/net/cris/eth_v10.c
+++ b/drivers/net/cris/eth_v10.c
@@ -618,12 +618,8 @@
 
 	/* show it in the log as well */
 
-	printk(KERN_INFO "%s: changed MAC to ", dev->name);
-
-	for (i = 0; i < 5; i++)
-		printk("%02X:", dev->dev_addr[i]);
-
-	printk("%02X\n", dev->dev_addr[i]);
+	printk(KERN_INFO "%s: changed MAC to %s\n",
+	       dev->name, print_mac(mac, dev->dev_addr));
 
 	spin_unlock(&np->lock);