net/mlx5e: SHAMPO: Separate pool for headers

net/mlx5e: SHAMPO: Separate pool for headers

Allow allocating a separate page pool for headers when SHAMPO is on.
This will be useful for adding support to zc page pool, which has to be
different from the headers page pool.
For now, the pools are the same.

Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.link/20250616141441.1243044-8-mbloch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>