[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/smc91x.c b/drivers/net/smc91x.c
index fe28d27..24e610e 100644
--- a/drivers/net/smc91x.c
+++ b/drivers/net/smc91x.c
@@ -1822,9 +1822,10 @@
 {
 	struct smc_local *lp = netdev_priv(dev);
 	static int version_printed = 0;
-	int i, retval;
+	int retval;
 	unsigned int val, revision_register;
 	const char *version_string;
+	DECLARE_MAC_BUF(mac);
 
 	DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__);
 
@@ -2014,10 +2015,8 @@
 			       "set using ifconfig\n", dev->name);
 		} else {
 			/* Print the Ethernet address */
-			printk("%s: Ethernet addr: ", dev->name);
-			for (i = 0; i < 5; i++)
-				printk("%2.2x:", dev->dev_addr[i]);
-			printk("%2.2x\n", dev->dev_addr[5]);
+			printk("%s: Ethernet addr: %s\n",
+			       dev->name, print_mac(mac, dev->dev_addr));
 		}
 
 		if (lp->phy_type == 0) {