flo/deb: keypad: set powerkey button to have reset notification

hardware reset notfication is sent by keypad driver if powerkey
button is pressed more than 7000 ms when can_reset flag is set.

Change-Id: I642c01cf9a53dbbd8a55f87e93310f920f1f1f3c
Signed-off-by: paris_yeh <paris_yeh@asus.com>