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/drivers/net/acenic.c b/drivers/net/acenic.c
index 66de80b..6eefd93 100644
--- a/drivers/net/acenic.c
+++ b/drivers/net/acenic.c
@@ -892,7 +892,6 @@
 	int board_idx, ecode = 0;
 	short i;
 	unsigned char cache_size;
-	DECLARE_MAC_BUF(mac);
 
 	ap = netdev_priv(dev);
 	regs = ap->regs;
@@ -1019,7 +1018,7 @@
 	dev->dev_addr[4] = (mac2 >> 8) & 0xff;
 	dev->dev_addr[5] = mac2 & 0xff;
 
-	printk("MAC: %s\n", print_mac(mac, dev->dev_addr));
+	printk("MAC: %pM\n", dev->dev_addr);
 
 	/*
 	 * Looks like this is necessary to deal with on all architectures,