crypto/qat: extend support for digest-encrypted auth-cipher

crypto/qat: extend support for digest-encrypted auth-cipher

This patch adds condition to be met when using
out-of-place auth-cipher operations. It checks
if the digest location overlaps with the data to
be encrypted or decrypted and if so, treats as a
digest-encrypted case.
Patch adds checking, if the digest is being
encrypted or decrypted partially and extends PMD
buffers accordingly.
It also adds feature flag for QuickAssist
Technology to emphasize it's support for digest
appended auth-cipher operations.

Signed-off-by: Damian Nowak <damianx.nowak@intel.com>
Acked-by: Fiona Trahe <fiona.trahe@intel.com>