Increase suspend test timing tolerance for Mario, Alex and Parrot

This patch backports the power_suspend.py timing tweaks from CL:43645
and CL:44876 to R26.

BUG=chromium-os:38995
TEST=None

Change-Id: I4175af8f1ffdbe2d56dbc5a6cc7ba1367c9e575f
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/44901
Reviewed-by: Mark Koudritsky <kamrik@chromium.org>
1 file changed