All the mlx5 drivers using MRs for data-path must unregister the mapped
memory when it is freed by the dpdk process.
Currently, only the net/eth driver unregisters MRs in free event.
Move the net callback handler from net driver to common.
Cc: stable@dpdk.org
Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>