net/mlx5: mlx5_ifc update for accessing ppcnt register of plane ports

This patch adds new fields to support multi-plane and the extend port
counters group. Actual support will be added in the next patch.

Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Link: https://lore.kernel.org/r/70221cdd79aad0e21cbf385d9567e3ebffbc5137.1718553901.git.leon@kernel.org


Signed-off-by: Leon Romanovsky <leonro@nvidia.com>