Added support for 50Gbps per lane link modes. Define various 50G, 100G
and 200G link modes using it.
Signed-off-by: NAya Levin <ayal@mellanox.com>
Reviewed-by: NEran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>