Add comment block for physical, PF and VF port attributes.
Signed-off-by: NParav Pandit <parav@nvidia.com>
Reviewed-by: NJiri Pirko <jiri@nvidia.com>
Reviewed-by: NRoi Dayan <roid@nvidia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>