hwf: add detection of s390x/zSeries hardware features
* configure.ac (gcry_cv_gcc_inline_asm_s390x) (HAVE_CPU_ARCH_S390X): Add s390x detection support. * mpi/config.links: Add setup for s390x links. * src/Makefile.am: Add 'hwf-s390x.c'. * src/g10lib.h (HWF_S390X_MSA, HWF_S390X_MSA_4, HWF_S390X_8): New. * src/hwf_common.h (_gcry_hwf_detect_s390x): New. * src/hwf-s390x.c: New. * src/hwfeatures.c: Add "s390x-msa", "s390x-msa-4" and "s390x-msa-8".
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>