DontTouch ChipTop ports

generators/chipyard/src/main/scala/IOBinders.scala

@@ -76,6 +76,8 @@ abstract trait HasIOBinders { this: LazyModule =>
   val iocellMap = InModuleBody { iobinders.keys.map(k => k -> (lzyFlattened(k)._2 ++ impFlattened(k)._2)).toMap }
 
   InModuleBody {
+    portMap.values.foreach(_.foreach(dontTouch(_)))
+  
     println("IOCells generated by IOBinders:")
     for ((k, v) <- iocellMap) {
       if (!v.isEmpty) {