[Bug target/85592] __builtin_cpu_is and __builtin_cpu_supports should be supported for aarch64

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85592

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
clang support:
https://reviews.llvm.org/D153153