qlge: Do not propaged vlan tag offloads to vlans

qlge driver turns off NETIF_F_HW_CTAG_FILTER, but forgets to
turn off HW_CTAG_TX and HW_CTAG_RX on vlan devices.  With the
current settings, q-in-q will only generate a single vlan header.
Remember to mask off CTAG_TX and CTAG_RX features in vlan_features.

CC: Shahed Shaikh <shahed.shaikh@qlogic.com>
CC: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
CC: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Acked-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlge/qlge_main.c

@@ -4765,7 +4765,9 @@ static int qlge_probe(struct pci_dev *pdev,
 	ndev->features = ndev->hw_features;
 	ndev->vlan_features = ndev->hw_features;
 	/* vlan gets same features (except vlan filter) */
-	ndev->vlan_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
+	ndev->vlan_features &= ~(NETIF_F_HW_VLAN_CTAG_FILTER |
+				 NETIF_F_HW_VLAN_CTAG_TX |
+				 NETIF_F_HW_VLAN_CTAG_RX);
 
 	if (test_bit(QL_DMA64, &qdev->flags))
 		ndev->features |= NETIF_F_HIGHDMA;