Add recovery/rollback flag to ilitek tddi script

Ilitek TDDI update script was getting called without the
recovery/rollback (`-r`) flag thus preventing touch firmware rollback.
Fixed by adding the missing flag.

BUG=b:281937410
TEST=Repoint symlink to newer firmware, reboot, validate firmware \
       upgrade and review update logs.
TEST=Repoint symlink to older firmware, reboot, validate firmware \
       downgrade and review downgrade logs.
TEST=Reboot DUT, validate no firmware update and review update logs.

Change-Id: If713b82c2d7c32770aa739c388b40c105a5b427a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/touch_updater/+/4953937
Tested-by: Henry Barnor <hbarnor@chromium.org>
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
Reviewed-by: Torsha Banerjee <torsha@google.com>
Commit-Queue: Henry Barnor <hbarnor@chromium.org>
1 file changed