[ELF] Add DebugInfoDWARF dependency

[thegameg]

Summary

rL284708 introduces a link error when building with BUILD_SHARED_LIBS:

undefined reference to `llvm::DWARFContext::parseCompileUnits()'
undefined reference to `llvm::DWARFContextInMemory::DWARFContextInMemory(
                            llvm::object::ObjectFile const&,
                            llvm::LoadedObjectInfo const*)'

The functions are available in libDebugInfoDWARF, from llvm.

[ruiu]

LGTM

[thegameg]

Thanks @ruiu. Can you commit this for me? I don't have commit access.

[grimar]

r284810, thanks !

ELF/CMakeLists.txt

   BitWriter
   Codegen
   Core
+  DebugInfoDWARF
   Demangle
   IPO
   Linker