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 <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1485832191-26889-11-git-send-email-fweisbec@gmail.comSigned-off-by: Ingo Molnar <mingo@kernel.org>

drivers/isdn/mISDN/stack.c

@@ -203,7 +203,7 @@ mISDNStackd(void *data)
 {
 	struct mISDNstack *st = data;
 #ifdef MISDN_MSG_STATS
-	cputime_t utime, stime;
+	u64 utime, stime;
 #endif
 	int err = 0;
 
@@ -306,9 +306,9 @@ mISDNStackd(void *data)
 	       "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",