Add back includes

Author: rnk

llvm/lib/Target/TargetMachine.cpp

@@ -20,6 +20,9 @@
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/Support/CodeGen.h"
 #include "llvm/Target/TargetLoweringObjectFile.h"
 using namespace llvm;