[PATCH] 2.5.22: elevator exports.

The dasd driver as a module needs to call elevator_init/elavator_exit to
change the elevator algorithm to elevator_noop.

drivers/block/elevator.c

@@ -425,3 +425,5 @@ EXPORT_SYMBOL(elevator_noop);
 EXPORT_SYMBOL(__elv_add_request);
 EXPORT_SYMBOL(__elv_next_request);
 EXPORT_SYMBOL(elv_remove_request);
+EXPORT_SYMBOL(elevator_exit);
+EXPORT_SYMBOL(elevator_init);