samus: Add PD MCU ACPI device and unmask host event

Samus has a PD MCU, and should handle PD MCU host events.

BUG=chrome-os-partner:31361
TEST=Manual on Samus. Verify that ACPI Notify routine is called when
host event is sent from EC.
BRANCH=None.

Original-Change-Id: Id40ebd438b3dd60cefc7650f2edc695c589343e9
Original-Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/214860
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-by: Alec Berg <alecaberg@chromium.org>
(cherry picked from commit d0752be013f66313d4218338e62372d0f5975097)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I08eb51eceeb7d2835d55e7e861126b137de72bf6
Reviewed-on: http://review.coreboot.org/8969
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
2 files changed