scsi: core: Move autosuspend timer delay to Scsi_Host

The runtime suspend timer delay is a const value in scsi_host_template
which a host driver cannot modify at runtime.  Move the delay to Scsi_Host
to allow a driver to update it.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20240109124015.31359-2-peter.wang@mediatek.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

include/scsi/scsi_host.h

@@ -497,9 +497,6 @@ struct scsi_host_template {
 	 *   scsi_netlink.h
 	 */
 	u64 vendor_id;
-
-	/* Delay for runtime autosuspend */
-	int rpm_autosuspend_delay;
 };
 
 /*
@@ -713,6 +710,9 @@ struct Scsi_Host {
 	 */
 	struct device *dma_dev;
 
+	/* Delay for runtime autosuspend */
+	int rpm_autosuspend_delay;
+
 	/*
 	 * We should ensure that this is aligned, both for better performance
 	 * and also because some compilers (m68k) don't automatically force