touch_updater: Fix presubmit errors

... for chromeos-goodix-touch-firmware-update-legacy.sh.

BUG=b:259595539
TEST=CQ
TEST=Test Goodix FW update on Krane.

Change-Id: Ic4ee80e8617463094f3a5e1764de799d616a6b07
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/touch_updater/+/4403752
Commit-Queue: Henry Barnor <hbarnor@chromium.org>
Tested-by: Henry Barnor <hbarnor@chromium.org>
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
1 file changed