Fix libatomic build to support --disable-gnu-indirect-function on AArch64.
Always build atomic_16.S, add aliases to the __atomic_ functions if !HAVE_IFUNC.
Include auto-config.h in atomic_16.S to avoid having to pass defines via
makefiles. Fix build if HWCAP_ATOMICS/CPUID are not defined.
libatomic:
PR target/113986
* Makefile.in: Regenerated.
* Makefile.am: Make atomic_16.S not depend on HAVE_IFUNC.
Remove predefine of HAVE_FEAT_LSE128.
* acinclude.m4: Remove ARCH_AARCH64_HAVE_LSE128.
* configure: Regenerated.
* config/linux/aarch64/atomic_16.S: Add __atomic_ alias if !HAVE_IFUNC.
* config/linux/aarch64/host-config.h: Correctly handle !HAVE_IFUNC.
Add defines for HWCAP_ATOMICS and HWCAP_CPUID.
27b6d081f6