[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/netconsole.c b/drivers/net/netconsole.c
index 69ef1eb..5ffbb88 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -306,18 +306,16 @@
 
 static ssize_t show_local_mac(struct netconsole_target *nt, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%02x:%02x:%02x:%02x:%02x:%02x\n",
-			nt->np.local_mac[0], nt->np.local_mac[1],
-			nt->np.local_mac[2], nt->np.local_mac[3],
-			nt->np.local_mac[4], nt->np.local_mac[5]);
+	DECLARE_MAC_BUF(mac);
+	return snprintf(buf, PAGE_SIZE, "%s\n",
+			print_mac(mac, nt->np.local_mac));
 }
 
 static ssize_t show_remote_mac(struct netconsole_target *nt, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%02x:%02x:%02x:%02x:%02x:%02x\n",
-			nt->np.remote_mac[0], nt->np.remote_mac[1],
-			nt->np.remote_mac[2], nt->np.remote_mac[3],
-			nt->np.remote_mac[4], nt->np.remote_mac[5]);
+	DECLARE_MAC_BUF(mac);
+	return snprintf(buf, PAGE_SIZE, "%s\n",
+			print_mac(mac, nt->np.remote_mac));
 }
 
 /*