增加kerr_subdevice_overtime错误码

zscanprotocol.hpp

@@ -54,6 +54,7 @@ typedef enum {
   kerr_invalid_param_num    = 3,
   kerr_subdevice_offline    = 4,
   kerr_function_not_support = 5,
+  kerr_subdevice_overtime   = 6,
 } common_ecode_t;
 }
 }  // namespace iflytop