CRISv10 Ethernet declare mac fix

Declare mac using DECLARE_MAC_BUF for use when calling print_mac().

This fixes compile error where mac was undeclared.
Also, remove unused variable i.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/net/cris/eth_v10.c

@@ -630,7 +630,7 @@ e100_set_mac_address(struct net_device *dev, void *p)
 {
 	struct net_local *np = netdev_priv(dev);
 	struct sockaddr *addr = p;
-	int i;
+	DECLARE_MAC_BUF(mac);
 
 	spin_lock(&np->lock); /* preemption protection */