hwf-s390x: add VX vector instruction set detection
* configure.ac (gcry_cv_gcc_inline_asm_s390x_vx): New check. * src/g10lib.h (HWF_S390X_VX): New. * src/hwf-s390x.c (HWCAP_S390_VXRS): New. (s390x_features) [HAVE_GCC_INLINE_ASM_S390X_VX]: Add VX feature check. * src/hwfeatures.c (hwlist): Add "s390x-vx".
- Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>