Revert of PPC/s390: [debugger] remove debugger statement support from FCG/CS.

src/ppc/macro-assembler-ppc.h

Index: src/ppc/macro-assembler-ppc.h
diff --git a/src/ppc/macro-assembler-ppc.h b/src/ppc/macro-assembler-ppc.h
index fa085f196866f52e402fc86d669e2399475d9694..acb1ab93f139fdc4fc109f9219ddcf7dbdbc40fd 100644
--- a/src/ppc/macro-assembler-ppc.h
+++ b/src/ppc/macro-assembler-ppc.h
@@ -635,10 +635,13 @@
 
   void IsObjectNameType(Register object, Register scratch, Label* fail);
 
+  // ---------------------------------------------------------------------------
+  // Debugger Support
+
   void DebugBreak();
-  // Frame restart support
   void MaybeDropFrames();
 
+  // ---------------------------------------------------------------------------
   // Exception handling
 
   // Push a new stack handler and link into stack handler chain.