[Hexagon] Add a member Subtarget to HexagonInstrInfo, NFC

llvm-svn: 314920
diff --git a/llvm/lib/Target/Hexagon/HexagonInstrInfo.h b/llvm/lib/Target/Hexagon/HexagonInstrInfo.h
index d45e895..63bdb1e 100644
--- a/llvm/lib/Target/Hexagon/HexagonInstrInfo.h
+++ b/llvm/lib/Target/Hexagon/HexagonInstrInfo.h
@@ -37,6 +37,7 @@
 class TargetRegisterInfo;
 
 class HexagonInstrInfo : public HexagonGenInstrInfo {
+  const HexagonSubtarget &Subtarget;
   virtual void anchor();
 
 public: