[ARC] Add InitializePasses header to fix ARC build.

llvm/lib/Target/ARC/ARCBranchFinalize.cpp

@@ -20,6 +20,7 @@
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/TargetInstrInfo.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/Debug.h"
 #include <vector>
 

llvm/lib/Target/ARC/ARCOptAddrMode.cpp

@@ -22,6 +22,7 @@
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/TargetRegisterInfo.h"
 #include "llvm/IR/Function.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"