confgen: disable config override warnings

tools/kconfig_new/confgen.py

@@ -82,6 +82,7 @@ def main():
 
     config = kconfiglib.Kconfig(args.kconfig)
     config.disable_redun_warnings()
+    config.disable_override_warnings()
 
     if len(args.defaults) > 0:
         # always load defaults first, so any items which are not defined in that config