Added vibra feedback when low battery can't boot to USER 

When phone is in actdead (charging only mode) and user tries to start up the phone while battery is still very low (< 3%), boot request is ignored. This PR adds vibra feedback so user knows that his power button press has been registered but there was something wrong.

Signed-off-by: Pekka Lundstrom <pekka.lundstrom@jollamobile.com>