Pass TargetOptions to HexagonTargetMachine constructor by reference to match other targets and the base class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152979 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Hexagon/HexagonTargetMachine.cpp b/lib/Target/Hexagon/HexagonTargetMachine.cpp
index 319eab2..b9e6894 100644
--- a/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -50,7 +50,7 @@
 ///
 HexagonTargetMachine::HexagonTargetMachine(const Target &T, StringRef TT,
                                            StringRef CPU, StringRef FS,
-                                           TargetOptions Options,
+                                           const TargetOptions &Options,
                                            Reloc::Model RM,
                                            CodeModel::Model CM,
                                            CodeGenOpt::Level OL)