lightbar: tap sequence can go in either direction
lightbar: tap sequence can go in either direction

We still need to decide which direction to use. Refer to the bug
for details & discussion.

BUG=chrome-os-partner:32227
BRANCH=ToT,samus
TEST=make buildall -j

From the EC console, use

  lightbar seq tap 0
  lightbar seq tap 1

If you don't give the third arg, it just uses the previous direction.

Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/231893
Reviewed-by: Randall Spangler <rspangler@chromium.org>
(cherry picked from commit 0126ab162a37d5314f838a99f0f1ac8def6974dd)
Signed-off-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

Change-Id: I3a6566e8ba18d392f8d9d3419745a5377d22db25
Reviewed-on: https://chromium-review.googlesource.com/235649
Tested-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Reviewed-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Commit-Queue: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Trybot-Ready: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

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