samus: Put touchscreen in reset in S3
samus: Put touchscreen in reset in S3

This can save 80mW in S3 when the lid is open.

BUG=chrome-os-partner:33057
BRANCH=samus
TEST=boot on samus, go to suspend with powerd_dbus_suspend and ensure
that the touchscreen is in reset.

Signed-off-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/229106
Reviewed-by: Alec Berg <alecaberg@chromium.org>
(cherry picked from commit 98a1d5d7321480563cb926298abccfd13f25789e)
Signed-off-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

Change-Id: I63c24ad5a8f8cb389ee0d6139edbbb46dec5423b
Reviewed-on: https://chromium-review.googlesource.com/229321
Reviewed-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Commit-Queue: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Tested-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

thehobn/ec,thehobn/ec,thehobn/ec,thehobn/ec