net: convert print_mac to %pM

This converts pretty much everything to print_mac. There were
a few things that had conflicts which I have just dropped for
now, no harm done.

I've built an allyesconfig with this and looked at the files
that weren't built very carefully, but it's a huge patch.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 280de48..29ef8dc 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -698,12 +698,11 @@
 						    br2684_devs);
 	const struct net_device *net_dev = brdev->net_dev;
 	const struct br2684_vcc *brvcc;
-	DECLARE_MAC_BUF(mac);
 
-	seq_printf(seq, "dev %.16s: num=%d, mac=%s (%s)\n",
+	seq_printf(seq, "dev %.16s: num=%d, mac=%pM (%s)\n",
 		   net_dev->name,
 		   brdev->number,
-		   print_mac(mac, net_dev->dev_addr),
+		   net_dev->dev_addr,
 		   brdev->mac_was_set ? "set" : "auto");
 
 	list_for_each_entry(brvcc, &brdev->brvccs, brvccs) {