Make ParameterTraits specializations for 32-bit integers valid for all arches.

test/cctest/compiler/call-tester.h

Index: test/cctest/compiler/call-tester.h
diff --git a/test/cctest/compiler/call-tester.h b/test/cctest/compiler/call-tester.h
index 199c23c6cec07b0e24efab9a3452d698e3f184a8..30bbe1e8aa1822e87a1ab5a10f714cc2c5fd7730 100644
--- a/test/cctest/compiler/call-tester.h
+++ b/test/cctest/compiler/call-tester.h
@@ -128,7 +128,6 @@ struct ParameterTraits<T*> {
   static uintptr_t Cast(void* r) { return reinterpret_cast<uintptr_t>(r); }
 };
 
-#if V8_TARGET_ARCH_MIPS64
 // Additional template specialization required for mips64 to sign-extend
 // parameters defined by calling convention.
 template <>
@@ -142,7 +141,6 @@ struct ParameterTraits<uint32_t> {
     return static_cast<int64_t>(static_cast<int32_t>(r));
   }
 };
-#endif
 
 class CallHelper {
  public: