net/mlx5: E-Switch, support eswitch inactive mode

net/mlx5: E-Switch, support eswitch inactive mode

Add support for eswitch switchdev inactive mode

Inactive mode: Drop all traffic going to FDB, Remove
mpfs l2 rules and disconnect adjacent vports.

Active mode: Traffic flows through FDB, mpfs table populated, and
adjacent vports are connected.

Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Adithya Jayachandran <ajayachandra@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20251108070404.1551708-4-saeed@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>