ntp: Move timex validation to timekeeping do_adjtimex call.

Move logic that does not need the ntp state to be done
in the timekeeping do_adjtimex() call.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/kernel/time/ntp_internal.h b/kernel/time/ntp_internal.h
index fdee80c..a2a3976 100644
--- a/kernel/time/ntp_internal.h
+++ b/kernel/time/ntp_internal.h
@@ -6,6 +6,7 @@
 /* Returns how long ticks are at present, in ns / 2^NTP_SCALE_SHIFT. */
 extern u64 ntp_tick_length(void);
 extern int second_overflow(unsigned long secs);
+extern int ntp_validate_timex(struct timex *);
 extern int __do_adjtimex(struct timex *);
 extern void __hardpps(const struct timespec *, const struct timespec *);
 #endif /* _LINUX_NTP_INTERNAL_H */