enic: Fix addr valid check in enic_set_vf_mac

zero mac address is a valid address for VIC dynamic vnic and sriov Vf's.
Fix the check in enic_set_vf_mac appropriately

Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
Signed-off-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: Sujith Sankar <ssujith@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cisco/enic/enic.h

@@ -32,7 +32,7 @@
 
 #define DRV_NAME		"enic"
 #define DRV_DESCRIPTION		"Cisco VIC Ethernet NIC Driver"
-#define DRV_VERSION		"2.1.1.38"
+#define DRV_VERSION		"2.1.1.39"
 #define DRV_COPYRIGHT		"Copyright 2008-2011 Cisco Systems, Inc"
 
 #define ENIC_BARS_MAX		6

drivers/net/ethernet/cisco/enic/enic_main.c

@@ -1069,7 +1069,7 @@ static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
 	if (err)
 		return err;
 
-	if (is_valid_ether_addr(mac)) {
+	if (is_valid_ether_addr(mac) || is_zero_ether_addr(mac)) {
 		if (vf == PORT_SELF_VF) {
 			memcpy(pp->vf_mac, mac, ETH_ALEN);
 			return 0;