crypto/mlx5: support basic operations

crypto/mlx5: support basic operations

The basic dev control operations are configure, close, start, stop and
get info.

Extended the existing support of configure and close:
	-mlx5_crypto_dev_configure- function used to configure device.
	-mlx5_crypto_dev_close-  function used to close a configured
	 device.
	-mlx5_crypto_dev_stop- function used to stop device.
	-mlx5_crypto_dev_start- function used to start device.
	-mlx5_crypto_dev_infos_get- function used to get info.

Added config struct to user private data with the fields socket id,
number of queue pairs and feature flags to be disabled.
Add the dev_start function that is used to start a configured device.
Add the dev_stop function that is used to stop a configured device.

Signed-off-by: Shiri Kuzin <shirik@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>