[Bug sanitizer/63646] libsanitizer fails to build for AARCH64:ILP32

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63646

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Actually I am not going to work on this mess.  That is what libsanitizer when
it comes to system calls.