PPC: Cleanup interface descriptors to reflect that vectors are part of loads.

src/ppc/debug-ppc.cc

Index: src/ppc/debug-ppc.cc
diff --git a/src/ppc/debug-ppc.cc b/src/ppc/debug-ppc.cc
index e7958dd3c19b2e141c435d0a29b9f1d3442ba007..905267dfae20fbb4755513a8d8911ae8864ffa7b 100644
--- a/src/ppc/debug-ppc.cc
+++ b/src/ppc/debug-ppc.cc
@@ -161,8 +161,8 @@ void DebugCodegen::GenerateLoadICDebugBreak(MacroAssembler* masm) {
   // Calling convention for IC load (from ic-ppc.cc).
   Register receiver = LoadDescriptor::ReceiverRegister();
   Register name = LoadDescriptor::NameRegister();
-  RegList regs = receiver.bit() | name.bit() |
-                 VectorLoadICTrampolineDescriptor::SlotRegister().bit();
+  Register slot = LoadDescriptor::SlotRegister();
+  RegList regs = receiver.bit() | name.bit() | slot.bit();
   Generate_DebugBreakCallHelper(masm, regs, 0);
 }