net: bridge: BROPT_FDB_LOCAL_VLAN_0: Skip local FDBs on VLAN creation

net: bridge: BROPT_FDB_LOCAL_VLAN_0: Skip local FDBs on VLAN creation

When BROPT_FDB_LOCAL_VLAN_0 is enabled, the local FDB entries for the
member ports as well as the bridge itself should not be created per-VLAN,
but instead only on VLAN 0.

Thus when a VLAN is added for a port or the bridge itself, a local FDB
entry with the corresponding address should not be added when in the VLAN-0
mode.

Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/bb13ba01d58ed6d5d700e012c519d38ee6806d22.1757004393.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>