[AIX] Disable empty.ll test using unsupported split dwarf

This test uses split-dwarf feature, which is not currently supported on AIX. Set this test to `UNSUPPORTED` on AIX for now.

Reviewed By: shchenz

Differential Revision: https://reviews.llvm.org/D114567

GitOrigin-RevId: 01eb91fa86a0c65cbaac75336769d188f35443ec
1 file changed