[clang] [clang] Implement address sanitizer on AIX (PR #129925)

[Jake Egan via cfe-commits]

jakeegan wrote:

> clang/test/Driver/Inputs/resource_dir/lib/aix/libclang_rt.asan-powerpc.a is the old runtime path.
Does $triple/libclang_rt.asan.a work? If yes, the new hierarchy is preferred

per target runtime dir is enabled on AIX now, so I updated the PR accordingly 

https://github.com/llvm/llvm-project/pull/129925