[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/b43/main.c b/drivers/net/wireless/b43/main.c
index 184ebe3..fd4ef27 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -2883,6 +2883,7 @@
 	u8 algorithm;
 	u8 index;
 	int err = -EINVAL;
+	DECLARE_MAC_BUF(mac);
 
 	if (modparam_nohwcrypt)
 		return -ENOSPC; /* User disabled HW-crypto */
@@ -2969,9 +2970,9 @@
 out:
 	if (!err) {
 		b43dbg(wl, "%s hardware based encryption for keyidx: %d, "
-		       "mac: " MAC_FMT "\n",
+		       "mac: %s\n",
 		       cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
-		       MAC_ARG(addr));
+		       print_mac(mac, addr));
 	}
 	return err;
 }