[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/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 847bd7f..614600c 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1233,8 +1233,10 @@
 	 */
 	mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
 	if (!is_valid_ether_addr(mac)) {
+		DECLARE_MAC_BUF(macbuf);
+
 		random_ether_addr(mac);
-		EEPROM(rt2x00dev, "MAC: " MAC_FMT "\n", MAC_ARG(mac));
+		EEPROM(rt2x00dev, "MAC: %s\n", print_mac(macbuf, mac));
 	}
 
 	rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);