DOCUMENTATION: Use newer DEFINE_SPINLOCK macro in docs.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>

Documentation/DocBook/kernel-locking.tmpl

@@ -854,7 +854,7 @@ The change is shown below, in standard patch format: the
  };
 
 -static DEFINE_MUTEX(cache_lock);
-+static spinlock_t cache_lock = SPIN_LOCK_UNLOCKED;
++static DEFINE_SPINLOCK(cache_lock);
  static LIST_HEAD(cache);
  static unsigned int cache_num = 0;
  #define MAX_CACHE_SIZE 10
@@ -1238,7 +1238,7 @@ Here is the "lock-per-object" implementation:
 -        int popularity;
  };
 
- static spinlock_t cache_lock = SPIN_LOCK_UNLOCKED;
+ static DEFINE_SPINLOCK(cache_lock);
 @@ -77,6 +84,7 @@
          obj->id = id;
          obj->popularity = 0;

Documentation/block/biodoc.txt

@@ -1097,7 +1097,7 @@ lock themselves, if required. Drivers that explicitly used the
 io_request_lock for serialization need to be modified accordingly.
 Usually it's as easy as adding a global lock:
 
-	static spinlock_t my_driver_lock = SPIN_LOCK_UNLOCKED;
+	static DEFINE_SPINLOCK(my_driver_lock);
 
 and passing the address to that lock to blk_init_queue().
 

Documentation/cli-sti-removal.txt

@@ -43,7 +43,7 @@ would execute while the cli()-ed section is executing.
 
 but from now on a more direct method of locking has to be used:
 
-	spinlock_t driver_lock = SPIN_LOCK_UNLOCKED;
+	DEFINE_SPINLOCK(driver_lock);
 	struct driver_data;
 
 	irq_handler (...)