[turbofan] Generalize AllocateStub to allow old space allocation.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 1acd977a061a62ea2eedc4406acd0dca647b2605..4f420ec51569234555fa712ff4ebc101563a6aab 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -3770,8 +3770,7 @@ void AllocateMutableHeapNumberStub::InitializeDescriptor(
 SIMD128_TYPES(SIMD128_INIT_DESC)
 #undef SIMD128_INIT_DESC
 
-void AllocateInNewSpaceStub::InitializeDescriptor(
-    CodeStubDescriptor* descriptor) {
+void AllocateStub::InitializeDescriptor(CodeStubDescriptor* descriptor) {
   descriptor->Initialize();
 }