[turbofan] Generalize AllocateStub to allow old space allocation.

src/x87/interface-descriptors-x87.cc

Index: src/x87/interface-descriptors-x87.cc
diff --git a/src/x87/interface-descriptors-x87.cc b/src/x87/interface-descriptors-x87.cc
index e41d42cdf58f58dbe7175768768d2494a0a14cb8..e8655c43d7c31af4e1692487c44f65bcfd75d193 100644
--- a/src/x87/interface-descriptors-x87.cc
+++ b/src/x87/interface-descriptors-x87.cc
@@ -250,7 +250,7 @@ void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
 SIMD128_TYPES(SIMD128_ALLOC_DESC)
 #undef SIMD128_ALLOC_DESC
 
-void AllocateInNewSpaceDescriptor::InitializePlatformSpecific(
+void AllocateDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {eax};
   data->InitializePlatformSpecific(arraysize(registers), registers);