firewire: consistent ifndef blocks in header files

Replace __fw_core_h by __fw_transaction_h to match the file name.
Add comments to the final #endif in header files.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/firewire/fw-device-cdev.h

@@ -143,4 +143,4 @@ struct fw_cdev_send_iso {
 	__s32 cycle;
 };
 
-#endif
+#endif /* __fw_cdev_h */

drivers/firewire/fw-device.h

@@ -124,4 +124,4 @@ fw_driver(struct device_driver *drv)
 
 extern struct file_operations fw_device_ops;
 
-#endif
+#endif /* __fw_device_h */

drivers/firewire/fw-topology.h

@@ -81,4 +81,4 @@ fw_node_put(struct fw_node *node)
 void
 fw_destroy_nodes(struct fw_card *card);
 
-#endif
+#endif /* __fw_topology_h */

drivers/firewire/fw-transaction.h

@@ -19,8 +19,8 @@
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-#ifndef __fw_core_h
-#define __fw_core_h
+#ifndef __fw_transaction_h
+#define __fw_transaction_h
 
 #include <linux/device.h>
 #include <linux/timer.h>
@@ -423,4 +423,4 @@ fw_core_handle_response(struct fw_card *card,
                         u32 length, u32 *payload);
 
 
-#endif /* __fw_core_h */
+#endif /* __fw_transaction_h */