net/mlx5e: E-Switch, Allow devcom initialization on more vports

New features could use the devcom interface but not necessarily
the lag feature although for vport managers and ECPF
still check for lag support.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>