[openssl/openssl] b256d3: Do not use stitched AES-GCM implementation on PPC32

[Tomáš Mráz]

  Branch: refs/heads/openssl-3.1
  Home:   https://github.com/openssl/openssl
  Commit: b256d32915d29bdcbc109363d3b05fce6dac30b7
      https://github.com/openssl/openssl/commit/b256d32915d29bdcbc109363d3b05fce6dac30b7
  Author: Tomas Mraz <tomas at openssl.org>
  Date:   2023-06-30 (Fri, 30 Jun 2023)

  Changed paths:
    M crypto/modes/build.info
    M providers/implementations/ciphers/cipher_aes_gcm_hw.c

  Log Message:
  -----------
  Do not use stitched AES-GCM implementation on PPC32

The implementation is not usable there at all.
Fixes #21301

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21312)