Move accelerator table defines and constants to Dwarf.h since
we're proposing it for DWARF5.

No functional change intended.

llvm-svn: 190074
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 517ace6..4c95e14 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -796,8 +796,7 @@
       IsImplementation = (CT.getRunTimeLang() == 0) ||
         CT.isObjcClassComplete();
     }
-    unsigned Flags = IsImplementation ?
-                     DwarfAccelTable::eTypeFlagClassIsImplementation : 0;
+    unsigned Flags = IsImplementation ? dwarf::DW_FLAG_type_implementation : 0;
     addAccelType(Ty.getName(), std::make_pair(TyDIE, Flags));
   }