[openssl/openssl] 9ab6b6: Fix AES-GCM on Power 8 CPUs

[Tomáš Mráz]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 9ab6b64ac856157a31a54c0d12207c2338bfa8e2
      https://github.com/openssl/openssl/commit/9ab6b64ac856157a31a54c0d12207c2338bfa8e2
  Author: Tomas Mraz <tomas at openssl.org>
  Date:   2022-09-13 (Tue, 13 Sep 2022)

  Changed paths:
    M include/crypto/aes_platform.h
    M providers/implementations/ciphers/cipher_aes_gcm_hw_ppc.inc

  Log Message:
  -----------
  Fix AES-GCM on Power 8 CPUs

Properly fallback to the default implementation on CPUs
missing necessary instructions.

Fixes #19163

Reviewed-by: Dmitry Belyavskiy <beldmit at gmail.com>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19182)