[builtins] Turn LoadIC_Miss and LoadIC_Slow builtins to TurboFan code stubs.

src/ic/ppc/handler-compiler-ppc.cc

Index: src/ic/ppc/handler-compiler-ppc.cc
diff --git a/src/ic/ppc/handler-compiler-ppc.cc b/src/ic/ppc/handler-compiler-ppc.cc
index 8b4f8b2c673e77d2d194b098892f444208bc0d07..45a0b9f1a28878864b52b869bc434545363c0fcd 100644
--- a/src/ic/ppc/handler-compiler-ppc.cc
+++ b/src/ic/ppc/handler-compiler-ppc.cc
@@ -536,7 +536,7 @@ void NamedLoadHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
       DCHECK(kind() == Code::LOAD_IC);
       PopVectorAndSlot();
     }
-    TailCallBuiltin(masm(), MissBuiltin(kind()));
+    TailCallMissHandler(masm(), kind());
     __ bind(&success);
   }
 }
@@ -548,7 +548,7 @@ void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
     __ b(&success);
     GenerateRestoreName(miss, name);
     if (IC::ICUseVector(kind())) PopVectorAndSlot();
-    TailCallBuiltin(masm(), MissBuiltin(kind()));
+    TailCallMissHandler(masm(), kind());
     __ bind(&success);
   }
 }