[PKT_SCHED]: psched_*_per_* can be static

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/sch_api.c

@@ -1145,8 +1145,8 @@ int tc_classify(struct sk_buff *skb, struct tcf_proto *tp,
 	return -1;
 }
 
-int psched_us_per_tick = 1;
-int psched_tick_per_us = 1;
+static int psched_us_per_tick = 1;
+static int psched_tick_per_us = 1;
 
 #ifdef CONFIG_PROC_FS
 static int psched_show(struct seq_file *seq, void *v)