Downstream patches will add support for hardware lag with
more than 2 ports. Add a way for users to query the number of lag ports.
Signed-off-by: NMark Bloch <mbloch@nvidia.com>
Reviewed-by: NMaor Gottlieb <maorg@nvidia.com>
Signed-off-by: NSaeed Mahameed <saeedm@nvidia.com>