seccomp: exempt clock_getres(3)

This seems to happen during libflashrom dispatches that fails.
Noticed while debugging resync `CLOCK_GETTIME` Makefile resync with
upstream Flashrom.

BUG=b:171014265
TEST=`/root/seccomp_debug.sh mosys memory spd print geometry -s size_mb`

Change-Id: I21292578a5dc32de8e4199f1f146aa90af75568f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/mosys/+/2509452
Tested-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
3 files changed