spinlock_api_smp.h: fix preprocessor comments

Correct the related comments for '#ifdef ... #endif'.
Signed-off-by: NChen Gang <gang.chen@asianux.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

include/linux/spinlock_api_smp.h

@@ -144,7 +144,7 @@ static inline void __raw_spin_lock(raw_spinlock_t *lock)
 	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)
 {