tlsdate: Add clock_adjtime64 syscall to seccomp

With glibc 2.32, we are noticing crashes in tlsdate because of
missing clock_adjtime64 syscall on ARM boards.
Add it to fix crashes.

BUG=chromium:1171287
TEST=CQ

Change-Id: I0400d04d4c17db15787c2634c8a5201b59d26c8e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/tlsdate/+/2759262
Tested-by: Manoj Gupta <manojgupta@chromium.org>
Auto-Submit: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Mattias Nissler <mnissler@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Jorge Lucangeli Obes <jorgelo@chromium.org>
diff --git a/tlsdate-seccomp-arm.policy b/tlsdate-seccomp-arm.policy
index 30395f2..6334f9b 100644
--- a/tlsdate-seccomp-arm.policy
+++ b/tlsdate-seccomp-arm.policy
@@ -56,3 +56,4 @@
 set_tid_address: 1
 getpid: 1
 prlimit64: arg2 == 0 && arg3 != 0
+clock_adjtime64