XFAIL clang/Driver/test/compress.c on AIX (#87269)

This PR XFAIL's `clang/Driver/compress.c` on AIX since it requires the
LLVM integrated assembler / assembly parser support, which is not
available on AIX.

```
/home/jenkinsWorker/jenkins/workspace/LLVM-Release/release-testing-prototype/llvm/clang18.1.2-final/final/llvm-project/clang/test/Driver/compress.c:19:18: error: CHECK-OPT_GZ: expected string not found in input
// CHECK-OPT_GZ: "--compress-debug-sections=zlib"
```