[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/netxen/netxen_nic_niu.c b/drivers/net/netxen/netxen_nic_niu.c
index 05e0577..5b9e1b3 100644
--- a/drivers/net/netxen/netxen_nic_niu.c
+++ b/drivers/net/netxen/netxen_nic_niu.c
@@ -603,6 +603,7 @@
 	int phy = physical_port[adapter->portnum];
 	unsigned char mac_addr[6];
 	int i;
+	DECLARE_MAC_BUF(mac);
 
 	for (i = 0; i < 10; i++) {
 		temp[0] = temp[1] = 0;
@@ -627,15 +628,10 @@
 	if (i == 10) {
 		printk(KERN_ERR "%s: cannot set Mac addr for %s\n",
 		       netxen_nic_driver_name, adapter->netdev->name);
-		printk(KERN_ERR "MAC address set: "
-		       "%02x:%02x:%02x:%02x:%02x:%02x.\n",
-		       addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
-
-		printk(KERN_ERR "MAC address get: "
-		       "%02x:%02x:%02x:%02x:%02x:%02x.\n",
-		       mac_addr[0],
-		       mac_addr[1],
-		       mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
+		printk(KERN_ERR "MAC address set: %s.\n",
+		       print_mac(mac, addr));
+		printk(KERN_ERR "MAC address get: %s.\n",
+		       print_mac(mac, mac_addr));
 	}
 	return 0;
 }