Cleanup interface descriptors to reflect that vectors are part of stores.

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 a7f81b3a5efc90056714f757ab25ee602558d8df..5324ef5b800c2933c9b3fd8955c1639d29675588 100644
--- a/src/ppc/interface-descriptors-ppc.cc
+++ b/src/ppc/interface-descriptors-ppc.cc
@@ -31,13 +31,9 @@ const Register LoadWithVectorDescriptor::VectorRegister() { return r6; }
 const Register StoreDescriptor::ReceiverRegister() { return r4; }
 const Register StoreDescriptor::NameRegister() { return r5; }
 const Register StoreDescriptor::ValueRegister() { return r3; }
+const Register StoreDescriptor::SlotRegister() { return r7; }
 
-
-const Register VectorStoreICTrampolineDescriptor::SlotRegister() { return r7; }
-
-
-const Register VectorStoreICDescriptor::VectorRegister() { return r6; }
-
+const Register StoreWithVectorDescriptor::VectorRegister() { return r6; }
 
 const Register VectorStoreTransitionDescriptor::SlotRegister() { return r7; }
 const Register VectorStoreTransitionDescriptor::VectorRegister() { return r6; }