touch_updater: Update script for using new ilitek_ld_tool

Using new ilitek_ld_tool with new input command argument.
With this change, time to login improved by 0.4s

BUG=b:366332769
TEST=chromeos-touch-update.sh work for ILITEK-ITS touchscreen

Cq-Depend: chromium:6357135
Change-Id: I030e1038f05868c9046d35f010584f5bd00e164f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/touch_updater/+/6355567
Reviewed-by: Henry Barnor <hbarnor@chromium.org>
Reviewed-by: Sean O'Brien <seobrien@chromium.org>
Tested-by: Joe Hong <joe_hung@ilitek.com>
Auto-Submit: Joe Hong <joe_hung@ilitek.com>
Commit-Queue: Sean O'Brien <seobrien@chromium.org>