time: Expose get_monotonic_coarse64() for in-kernel uses

Adds a timespec64 based get_monotonic_coarse64() implementation
that can be used as we convert internal users of
get_monotonic_coarse away from using timespecs.

Signed-off-by: John Stultz <john.stultz@linaro.org>
diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h
index e40a8d6..8cab4b7 100644
--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -25,7 +25,7 @@
 /*
  * timespec based interfaces
  */
-struct timespec get_monotonic_coarse(void);
+struct timespec64 get_monotonic_coarse64(void);
 extern void getrawmonotonic64(struct timespec64 *ts);
 extern void ktime_get_ts64(struct timespec64 *ts);
 
@@ -66,6 +66,10 @@
 	getrawmonotonic64(ts);
 }
 
+static inline struct timespec get_monotonic_coarse(void)
+{
+	return get_monotonic_coarse64();
+}
 #else
 /**
  * Deprecated. Use do_settimeofday64().
@@ -118,6 +122,11 @@
 	getrawmonotonic64(&ts64);
 	*ts = timespec64_to_timespec(ts64);
 }
+
+static inline struct timespec get_monotonic_coarse(void)
+{
+	return timespec64_to_timespec(get_monotonic_coarse64());
+}
 #endif
 
 extern void getboottime(struct timespec *ts);