net/mlx5: Add IFC bits and enums for crypto key

Add and extend structure layouts and defines for fast crypto key
update. This is a prerequisite to support bulk creation, key
modification and destruction, software wrapped DEK, and SYNC_CRYPTO
command.

Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>