isdn: Convert obsolete cputime type to nsecs

Not sure if MISDN stats are ABI but it displays task cputime in cputime_t
raw value regardless of what type cputime_t wraps which could be either
jiffies, nsecs, usecs, or whatever random time unit. Plus it wrongly
assumes that cputime_t is long.

Given that this dump is broken anyway, lets just display the nanosec
value and stick with that.

Signed-off-by: Frederic Weisbecker <[e-mail]>
Cc: Benjamin Herrenschmidt <[e-mail]>
Cc: Fenghua Yu <[e-mail]>
Cc: Heiko Carstens <[e-mail]>
Cc: Linus Torvalds <[e-mail]>
Cc: Martin Schwidefsky <[e-mail]>
Cc: Michael Ellerman <[e-mail]>
Cc: Paul Mackerras <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Rik van Riel <[e-mail]>
Cc: Stanislaw Gruszka <[e-mail]>
Cc: Thomas Gleixner <[e-mail]>
Cc: Tony Luck <[e-mail]>
Cc: Wanpeng Li <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Ingo Molnar <[e-mail]>

drivers/isdn/mISDN/stack.c

···
 {
 	struct mISDNstack *st = data;
 #ifdef MISDN_MSG_STATS
-	cputime_t utime, stime;
+	u64 utime, stime;
 #endif
 	int err = 0;
 
···
 	       "msg %d sleep %d stopped\n",
 	       dev_name(&st->dev->dev), st->msg_cnt, st->sleep_cnt,
 	       st->stopped_cnt);
-	task_cputime_t(st->thread, &utime, &stime);
+	task_cputime(st->thread, &utime, &stime);
 	printk(KERN_DEBUG
-	       "mISDNStackd daemon for %s utime(%ld) stime(%ld)\n",
+	       "mISDNStackd daemon for %s utime(%llu) stime(%llu)\n",
 	       dev_name(&st->dev->dev), utime, stime);
 	printk(KERN_DEBUG
 	       "mISDNStackd daemon for %s nvcsw(%ld) nivcsw(%ld)\n",