Include map into the A15SDOptimizer rather than pick it up

transitively from the DFAPacketizer via TargetInstrInfo.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219652 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/A15SDOptimizer.cpp

@@ -35,6 +35,7 @@
 #include "llvm/Support/Debug.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
+#include <map>
 #include <set>
 
 using namespace llvm;