net/mlx5: DR, Move action apply logic to dr_ste

The action apply logic is device specific per STE version,
moving to the STE layer will allow implementing it for
both devices while keeping DR upper layers the same.

Signed-off-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>