net/mlx5e: Don't add/remove 802.1ad rules when changing 802.1Q VLAN filter

Toggling of C-tag VLAN filter should not affect the "any S-tag" steering rule.

Fixes: 8a271746 ("net/mlx5e: Receive s-tagged packets in promiscuous mode")
Signed-off-by: Gal Pressman <galp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>