Power button power off behavior

Change the power button behavior:
  On short press: Only power on
  On long press: hard power off
Resolves openbmc/openbmc#485

Change-Id: I394e516e319f7075e2ab1dec7fa5d68dd276ebb8
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
1 file changed