[BNX2]: Fix Xen problem.

This fixes the problem of not receiving packets in the Xen bridging
environment.  The Xen script sets the device's MAC address to
FE:FF:FF:FF:FF:FF and puts the device in promiscuous mode.  The
firmware had problem receiving all packets in this configuration.

New firmware and setting the PROM_VLAN bit when in promiscuous mode
will fix this problem.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/bnx2.c

@@ -2040,7 +2040,8 @@ bnx2_set_rx_mode(struct net_device *dev)
 	if (dev->flags & IFF_PROMISC) {
 		/* Promiscuous mode. */
 		rx_mode |= BNX2_EMAC_RX_MODE_PROMISCUOUS;
-		sort_mode |= BNX2_RPM_SORT_USER0_PROM_EN;
+		sort_mode |= BNX2_RPM_SORT_USER0_PROM_EN |
+			     BNX2_RPM_SORT_USER0_PROM_VLAN;
 	}
 	else if (dev->flags & IFF_ALLMULTI) {
 		for (i = 0; i < NUM_MC_HASH_REGISTERS; i++) {