touch_updater : Add support for elan touchpad firmware update

Signed-off-by: Benson Leung <[email protected]>

BUG=chromium:343399
TEST=Load this onto squawks with an elan trackpad, along with the
firmware package.
Check that the following appears in /var/log/messages:
chromeos-touch-firmware-update[366]-ELAN0000:00: Product ID : 57.0
chromeos-touch-firmware-update[366]-ELAN0000:00: Current Firmware: 0.0
chromeos-touch-firmware-update[366]-ELAN0000:00: Updater Firmware: 0.0
chromeos-touch-firmware-update[366]-ELAN0000:00: Firmware up to date.

Original-Change-Id: I53e501ce3610ab180d923c8d3a64730d566b0e97
Reviewed-on: https://chromium-review.googlesource.com/186737
Tested-by: Benson Leung <[email protected]>
Reviewed-by: Bernie Thompson <[email protected]>
Reviewed-by: Andrew de los Reyes <[email protected]>
Commit-Queue: Benson Leung <[email protected]>
(cherry picked from commit 2c1b876f15d2e1a42b602047d68bff7b26d22de4)

Change-Id: I3e8d1de679c0cace5a25e6394af6b58e78df3853
Reviewed-on: https://chromium-review.googlesource.com/189993
Reviewed-by: Bernie Thompson <[email protected]>
Commit-Queue: Benson Leung <[email protected]>
Tested-by: Benson Leung <[email protected]>
1 file changed
tree: a3fe8d57a6384fc64cf80e0a4b3b97a98f2a5695
  1. scripts/
  2. LICENSE
  3. OWNERS
  4. README