llvm/lib/CodeGen: Fix cmake build since r146542.

llvm-svn: 146550

llvm/lib/CodeGen/CMakeLists.txt

@@ -47,6 +47,7 @@ add_llvm_library(LLVMCodeGen
   MachineFunctionPass.cpp
   MachineFunctionPrinterPass.cpp
   MachineInstr.cpp
+  MachineInstrBundle.cpp
   MachineLICM.cpp
   MachineLoopInfo.cpp
   MachineLoopRanges.cpp