trivial: fix ETIMEOUT -> ETIMEDOUT typos

fix ETIMEOUT -> ETIMEDOUT typos

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c
index 820c5af..fcd107a 100644
--- a/kernel/rtmutex.c
+++ b/kernel/rtmutex.c
@@ -902,7 +902,7 @@
  * Returns:
  *  0 		on success
  * -EINTR 	when interrupted by a signal
- * -ETIMEOUT	when the timeout expired
+ * -ETIMEDOUT	when the timeout expired
  * -EDEADLK	when the lock would deadlock (when deadlock detection is on)
  */
 int