net: aquantia: driver should correctly declare vlan_features bits

In particular, not reporting SG forced skbs to be linear for vlan
interfaces over atlantic NIC.

With this fix it is possible to enable SG feature on device and
therefore optimize performance.
Reported-by: NMa Yuying <yuma@redhat.com>
Signed-off-by: NIgor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

@@ -246,6 +246,8 @@ void aq_nic_ndev_init(struct aq_nic_s *self)
 
 	self->ndev->hw_features |= aq_hw_caps->hw_features;
 	self->ndev->features = aq_hw_caps->hw_features;
+	self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
+				     NETIF_F_RXHASH | NETIF_F_SG | NETIF_F_LRO;
 	self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
 	self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;