Back out name change since RTEMS will not change until the next RTEMS release.

src/RTEMS/base/rtems_init.c

@@ -313,7 +313,7 @@ static void netStatCallFunc(const iocshArgBuf *args)
 static const iocshFuncDef stackCheckFuncDef = {"stackCheck",0,NULL};
 static void stackCheckCallFunc(const iocshArgBuf *args)
 {
-    rtems_stack_checker_dump_usage();
+    Stack_check_Dump_usage();
 }
 
 static const iocshFuncDef heapSpaceFuncDef = {"heapSpace",0,NULL};