netem: fix build error on 32bit arches

ERROR: "__udivdi3" [net/sched/sch_netem.ko] undefined!

Signed-off-by: Eric Dumazet <[e-mail]>
Acked-by: Hagen Paul Pfeifer <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/sched/sch_netem.c

···
 
 static psched_time_t packet_len_2_sched_time(unsigned int len, u32 rate)
 {
-	return PSCHED_NS2TICKS((u64)len * NSEC_PER_SEC / rate);
+	u64 ticks = (u64)len * NSEC_PER_SEC;
+
+	do_div(ticks, rate);
+	return PSCHED_NS2TICKS(ticks);
 }
 
 /*