[NFC][AIX]Disable unsupported hip test on AIX

AIX doesn't support GPU. There is no point testing HIP on it.

Reviewed By: Jake-Egan

Differential Revision: https://reviews.llvm.org/D114484

clang/test/Driver/hip-version.hip

@@ -1,6 +1,7 @@
 // REQUIRES: clang-driver
 // REQUIRES: x86-registered-target
 // REQUIRES: amdgpu-registered-target
+// UNSUPPORTED: aix
 
 // RUN: %clang -v --rocm-path=%S/Inputs/rocm 2>&1 \
 // RUN:   | FileCheck -check-prefixes=FOUND %s