[llvm] r177901 - XFAIL DebugInfo tests for Hexagon.

[Jyotsna Verma]

>> Hexagon does not support -filetype=obj(direct object generation) flag.
>
>That seems like a strange limitation. Is there a bug for that? Could you
>mention the bug with/near the XFAILs?

Let me elaborate it a little - Hexagon doesn't support direct object
generation as we  don't have the integrated assembler at this point and
causes these tests to fail.

Thanks,
Jyotsna