PPC: Refine '[Interpreter] Fix deopt when accumulator needs to be materialized.'

Fix comment.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:4678
LOG=N

Review URL: https://codereview.chromium.org/1714503002

Cr-Commit-Position: refs/heads/master@{#34127}

src/ppc/builtins-ppc.cc

@@ -1188,8 +1188,8 @@ static void Generate_InterpreterNotifyDeoptimizedHelper(
   // Enter an internal frame.
   {
     FrameAndConstantPoolScope scope(masm, StackFrame::INTERNAL);
-    // Save accumulator register and pass the deoptimization type to
-    // the runtime system.
+
+    // Pass the deoptimization type to the runtime system.
     __ LoadSmiLiteral(r4, Smi::FromInt(static_cast<int>(type)));
     __ Push(r4);
     __ CallRuntime(Runtime::kNotifyDeoptimized);