avx512: tweak AVX512 spec stop, use common macro in assembly
* cipher/cipher-gcm-intel-pclmul.c: Use xmm registers for AVX512 spec stop. * cipher/asm-common-amd64.h (spec_stop_avx512): New. * cipher/blake2b-amd64-avx512.S: Use spec_stop_avx512. * cipher/blake2s-amd64-avx512.S: Likewise. * cipher/camellia-gfni-avx512-amd64.S: Likewise. * cipher/chacha20-avx512-amd64.S: Likewise. * cipher/keccak-amd64-avx512.S: Likewise. * cipher/poly1305-amd64-avx512.S: Likewise. * cipher/sha512-avx512-amd64.S: Likewise. * cipher/sm4-gfni-avx512-amd64.S: Likewise. ---
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>