cups_proxy: fix vdso seccomp cros_vm crash

BUG=chromium:1111875
TEST=run cups_proxy on amd64-generic in cros_vm

Change-Id: I6c767cc1ffacc03798f93097a7945c2b0434522d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform2/+/2465050
Tested-by: Pranav Batra <batrapranav@chromium.org>
Auto-Submit: Pranav Batra <batrapranav@chromium.org>
Commit-Queue: Sean Kau <skau@chromium.org>
Reviewed-by: Sean Kau <skau@chromium.org>
diff --git a/cups_proxy/seccomp/cups_proxy-seccomp-amd64.policy b/cups_proxy/seccomp/cups_proxy-seccomp-amd64.policy
index 2ea1463..374c1be 100644
--- a/cups_proxy/seccomp/cups_proxy-seccomp-amd64.policy
+++ b/cups_proxy/seccomp/cups_proxy-seccomp-amd64.policy
@@ -29,6 +29,7 @@
 getresuid: 1
 getsockname: 1
 gettid: 1
+gettimeofday: 1
 getuid: 1
 listen: 1
 lseek: 1