Add Simd128Value code stubs.

src/ppc/interface-descriptors-ppc.cc

Index: src/ppc/interface-descriptors-ppc.cc
diff --git a/src/ppc/interface-descriptors-ppc.cc b/src/ppc/interface-descriptors-ppc.cc
index 57dbf1c81c788fb415d244d7bf6da38d2faa2b4a..04b9b1b1f92af32363e86ef02f2da13d94df28cf 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.cc
@@ -236,6 +236,13 @@ void AllocateHeapNumberDescriptor::InitializePlatformSpecific(
   data->InitializePlatformSpecific(0, nullptr, nullptr);
 }
 
+#define SIMD128_ALLOC_DESC(TYPE, Type, type, lane_count, lane_type) \
+  void Allocate##Type##Descriptor::InitializePlatformSpecific(      \
+      CallInterfaceDescriptorData* data) {                          \
+    data->InitializePlatformSpecific(0, nullptr, nullptr);          \
+  }
+SIMD128_TYPES(SIMD128_ALLOC_DESC)
+#undef SIMD128_ALLOC_DESC
 
 void AllocateInNewSpaceDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {