net/mlx5e: Expose RX dma info helpers

In order to support RQs outside of channel context, change
mlx5e_init_di_list() signature to accept NUMA node instead of cpu.
In addition, expose dma info helpers as API. This API will be used for
RQ's creation in other files in downstream patches.

Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>