Move DebugInfoKind into its own header to cut the cyclic dependency edge from Driver to Frontend.

llvm-svn: 259489
diff --git a/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp b/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
index e3030a8..14c30de 100644
--- a/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
+++ b/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
@@ -151,7 +151,7 @@
     CodeGenOpts.CodeModel = "default";
     CodeGenOpts.ThreadModel = "single";
     CodeGenOpts.DebugTypeExtRefs = true;
-    CodeGenOpts.setDebugInfo(CodeGenOptions::FullDebugInfo);
+    CodeGenOpts.setDebugInfo(codegenoptions::FullDebugInfo);
   }
 
   ~PCHContainerGenerator() override = default;