Rambi: Added basic touch config for Elan

The new config has a fix for the touchpad resolution and pressure
calibration information.

BUG=chromium:363313
TEST=use touchpad. sensitivity should be better than before.

Change-Id: Iaafbd38e454bd5f4c6703d6df47d6dbd26509789
Reviewed-on: https://chromium-review.googlesource.com/194804
Reviewed-by: Benson Leung <bleung@chromium.org>
Commit-Queue: Dennis Kempin <denniskempin@chromium.org>
Tested-by: Dennis Kempin <denniskempin@chromium.org>
(cherry picked from commit 389938ac07e2d6d283a19b718534cf74cda47af3)
Reviewed-on: https://chromium-review.googlesource.com/194953