net/mlx5e: Alloc xsk channel param out of mlx5e_open_xsk()

net/mlx5e: Alloc xsk channel param out of mlx5e_open_xsk()

Currently the allocation and filling of the xsk channel
parameters was done in mlx5e_open_xsk().

Move this responsibility out of mlx5e_open_xsk() and have
the function take an already filled mlx5e_channel_param.

mlx5e_open_channel() already allocates channel parameters.
The only precaution that is needed is to call
mlx5e_build_xsk_channel_param() before mlx5e_open_xsk().

mlx5e_xsk_enable_locked() now allocates and fills the xsk parameters.

For simplicity, link the xsk parameters in struct mlx5e_channel_params
so that channel params can be passed around.

This patch has no functional changes.

Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260223204155.1783580-6-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>