net/mlx5e: E-Switch, Pass other_vport flag if vport is not 0

When creating flow table for shared fdb resources, there is
only need to pass other_vport flag if vport is not 0 or
if the port is ECPF in BlueField.

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