it varies from kernel. Sometimes ..../notification/led_timeout and sometimes .../backlightnotification/led_timeout
Sorry, wait for voku to answer you but until then, you could try to create file. nothing to lose.
Its there I tried it .dose not work.I have fixed permission. Also created another folder in .int d folder. Still dont work. I don't think its possible. The only way to do it is if the dev implements truvchek kernel script. That's the only kernel it works