[Layering] Move DebugInfo.h into the IR library where its implementation
already lives.

llvm-svn: 203046
diff --git a/llvm/lib/Transforms/Instrumentation/DebugIR.cpp b/llvm/lib/Transforms/Instrumentation/DebugIR.cpp
index 086bbc3..5cca819 100644
--- a/llvm/lib/Transforms/Instrumentation/DebugIR.cpp
+++ b/llvm/lib/Transforms/Instrumentation/DebugIR.cpp
@@ -20,10 +20,10 @@
 
 #include "llvm/IR/ValueMap.h"
 #include "DebugIR.h"
-#include "llvm/DebugInfo.h"
 #include "llvm/IR/AssemblyAnnotationWriter.h"
 #include "llvm/IR/DIBuilder.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"