net/mlx5e: Add support for 800Gbps link modes

Add support for 800Gbps speed, link modes of 100Gbps per lane.

Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20240402133043.56322-9-tariqt@nvidia.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>