CHROMIUM: chromeos_acpi: Enable USB wake from S3

CHROMIUM: chromeos_acpi: Enable USB wake from S3

Enable wake from USB devices for x86. Confirmed working on link.
Should likely work on lumpy as well.

BUG=chromium:240942
TEST=Connect a USB keyboard to external USB port. Suspend device using
"powerd_suspend" or idle suspend. After the system has suspended, hit a
key on USB keyboard. The system should resume.

Signed-off-by: Sameer Nanda <snanda@chromium.org>
Change-Id: Ia06b996a67abbf7943d081bf56f01db08292ccba
Reviewed-on: https://gerrit.chromium.org/gerrit/43152
Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>