fix comment: unlock_hrtimer_base is the counterpart of lock_hrtimer_base

Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index dabfefb..b6d2ff7 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -638,7 +638,7 @@
 #endif
 
 /*
- * Counterpart to lock_timer_base above:
+ * Counterpart to lock_hrtimer_base above:
  */
 static inline
 void unlock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)