scsi: core: Move the definition of SCSI_QUEUE_DELAY

Move the definition of SCSI_QUEUE_DELAY to just above the function that
uses it.

Link: https://lore.kernel.org/r/20220630195703.10155-2-bvanassche@acm.org
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: John Garry <john.garry@huawei.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/scsi_lib.c

@@ -75,13 +75,6 @@ int scsi_init_sense_cache(struct Scsi_Host *shost)
 	return ret;
 }
 
-/*
- * When to reinvoke queueing after a resource shortage. It's 3 msecs to
- * not change behaviour from the previous unplug mechanism, experimentation
- * may prove this needs changing.
- */
-#define SCSI_QUEUE_DELAY	3
-
 static void
 scsi_set_blocked(struct scsi_cmnd *cmd, int reason)
 {
@@ -1648,6 +1641,13 @@ static void scsi_mq_put_budget(struct request_queue *q, int budget_token)
 	sbitmap_put(&sdev->budget_map, budget_token);
 }
 
+/*
+ * When to reinvoke queueing after a resource shortage. It's 3 msecs to
+ * not change behaviour from the previous unplug mechanism, experimentation
+ * may prove this needs changing.
+ */
+#define SCSI_QUEUE_DELAY 3
+
 static int scsi_mq_get_budget(struct request_queue *q)
 {
 	struct scsi_device *sdev = q->queuedata;