cipher/sha512: fix 'accessing 64 bytes in a region of size 8' warnings
* cipher/sha512.c (SHA512_STATESHA256_CONTEXT): Replace h0-h7 with h[8]. (do_sha512_transform_i386_ssse3, do_sha512_transform_ppc8) (do_sha512_transform_ppc9, do_sha512_transform_s390x) (do_sha512_final_s390x, sha512_init, sha384_init, sha512_256_init) (sha512_224_init, do_transform_generic, sha512_final): Convert use of h0-h7 to h[0]-h[7].
GCC-11 gives following warning on sha512.c:
warning: 'func' accessing 64 bytes in a region of size 8
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>