crypto/ipsec_mb: support snow3g digest appended ops

crypto/ipsec_mb: support snow3g digest appended ops

This patch enables out-of-place auth-cipher operations where
digest should be encrypted along with the rest of raw data.
It also adds support for partially encrypted digest when using
auth-cipher operations.

Signed-off-by: Damian Nowak <damianx.nowak@intel.com>
Signed-off-by: Kai Ji <kai.ji@intel.com>
Signed-off-by: Piotr Bronowski <piotrx.bronowski@intel.com>
Signed-off-by: Ciara Power <ciara.power@intel.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
Acked-by: Fan Zhang <roy.fan.zhang@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>