eve: Disable PMIC power button shutdown timer
eve: Disable PMIC power button shutdown timer

Disable the PMIC shutdown timer for power button to prevent
it from being able to shutdown the system.  Refresh+Power is
still the best way to do a PMIC reset.

BUG=none
TESET=manual: Close lid and enter suspend, hold power button for
>30 seconds and ensure EC stays up and system stays in suspend.

Change-Id: I1e03c6acab57aeba10083eb7bb6a6141bfa56993
Signed-off-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@google.com>
Reviewed-on: https://chromium-review.googlesource.com/614600
Reviewed-by: Scott Collyer <7d40b3eb9e17bf55d972074a5e77a7ea4159f9dd@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2320256
Commit-Queue: Patryk Duda <6aed17a362577cf10cb5675888c1635d522769c1@semihalf.com>
Tested-by: Patryk Duda <6aed17a362577cf10cb5675888c1635d522769c1@semihalf.com>
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec