mb/google/octopus: Enable tablet mode

This change configures ACPI to properly route notifications from the EC
for tablet mode events to userspace. Relevant EC config changes are at:
  https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1125261

BUG=b:111078678
TEST=With EC change, tablet mode detected by evtest and powerd

Change-Id: Ifbc318186b195534f647f062544de4968aa87401
Signed-off-by: Justin TerAvest <teravest@chromium.org>
Reviewed-on: https://review.coreboot.org/27346
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jett Rink <jettrink@google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
1 file changed