Fix netfilter xt_time's time_mt()'s use of do_div() on an s64 by using
div_s64() instead.
This was introduced by patch 
ee4411a1b1e0b679c99686629b5eab5a072ce49f
("[NETFILTER]: x_tables: add xt_time match").
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
 
                __net_timestamp((struct sk_buff *)skb);
 
        stamp = ktime_to_ns(skb->tstamp);
-       do_div(stamp, NSEC_PER_SEC);
+       stamp = div_s64(stamp, NSEC_PER_SEC);
 
        if (info->flags & XT_TIME_LOCAL_TZ)
                /* Adjust for local timezone */