Move CodeGenOptions from Frontend to Basic

Basic uses CodeGenOptions and should not depend on Frontend.

llvm-svn: 348827
diff --git a/clang/lib/CodeGen/CGDeclCXX.cpp b/clang/lib/CodeGen/CGDeclCXX.cpp
index 2884f13..08ceaa9 100644
--- a/clang/lib/CodeGen/CGDeclCXX.cpp
+++ b/clang/lib/CodeGen/CGDeclCXX.cpp
@@ -15,7 +15,7 @@
 #include "CGCXXABI.h"
 #include "CGObjCRuntime.h"
 #include "CGOpenMPRuntime.h"
-#include "clang/Frontend/CodeGenOptions.h"
+#include "clang/Basic/CodeGenOptions.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/IR/Intrinsics.h"
 #include "llvm/IR/MDBuilder.h"