wdt_util: Add getdents64 syscall to seccomp for arm platform

Allow the getdents64 syscall for wdt_util on arm platform. It was
causing policy violation in firmware update process. getdents64 is
already allowed in amd64 platform for wdt_util.

BUG=b:313131179
TEST=Downgrade weida touch firmware on jacuzzi DUT.
     `emerge-jacuzzi touch_updater;`
     `cros deploy ${DUT} touch_updater;`
     check the kernel log /var/log/messages.

Change-Id: If3d7fdacb7b8dd0c198d18cf26dee8b03d2fbfd7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/touch_updater/+/5085650
Reviewed-by: Torsha Banerjee <torsha@google.com>
Reviewed-by: Sean O'Brien <seobrien@chromium.org>
Tested-by: Henry Barnor <hbarnor@chromium.org>
Commit-Queue: ChromeOS Auto Retry <chromeos-auto-retry@chromeos-bot.iam.gserviceaccount.com>
2 files changed