touch_updater: Add log message for test case parsing for elants_i2c devices

By our customer's request, some log messages with specific pattern
should be added to /var/log/messages for test case parsing.
This patch adds log message with pattern "Product ID: <Product ID>".

Note: This patch might be duplicating another effort.

BUG=b:416642463
TEST=on jacuzzi device with elan i2c touchscreen, version check works.
After script finished, the specific log message can be found in
/var/log/messages.

Change-Id: Ia37aaefb548c058de97628fb020ecbee49bccda1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/touch_updater/+/6577831
Reviewed-by: Paul Liang <[email protected]>
Reviewed-by: Sean O'Brien <[email protected]>
Reviewed-by: Henry Barnor <[email protected]>
Commit-Queue: Paul Liang <[email protected]>
Tested-by: Paul Liang <[email protected]>
(cherry picked from commit 33e69446d34a89cd68708e2b3ca0b360437d1680)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/touch_updater/+/6618054
Commit-Queue: Ricky Chang <[email protected]>
Reviewed-by: Ricky Chang <[email protected]>
Reviewed-by: Allan Almiranez <[email protected]>
Tested-by: Johnny Chang <[email protected]>
Release-Owner: Alon Bajayo <[email protected]>
1 file changed