fw-dump: add openat to seccomp

This adds openat to a seccomp policy file if open is already there.
We need this because glibc 2.25 changed it system call for open().

BUG=chromium:894614
TEST=None

Change-Id: I1208ac922a8b8d5c7f91c0d15fa89afdb8bd1b15
Reviewed-on: https://chrome-internal-review.googlesource.com/701350
Commit-Ready: Yunlian Jiang <yunlian@google.com>
Tested-by: Yunlian Jiang <yunlian@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/intel-wifi-fw-dump/+/1925479
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Kirtika Ruchandani <kirtika@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
1 file changed