spinlock_api_smp.h: fix preprocessor comments

Correct the related comments for '#ifdef ... #endif'.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/include/linux/spinlock_api_smp.h b/include/linux/spinlock_api_smp.h
index 51df117a..bdb9993 100644
--- a/include/linux/spinlock_api_smp.h
+++ b/include/linux/spinlock_api_smp.h
@@ -144,7 +144,7 @@
 	LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
 }
 
-#endif /* CONFIG_PREEMPT */
+#endif /* !CONFIG_GENERIC_LOCKBREAK || CONFIG_DEBUG_LOCK_ALLOC */
 
 static inline void __raw_spin_unlock(raw_spinlock_t *lock)
 {