[SCSI] tgt: move tsk_mgmt_response callback to transport class

This moves tsk_mgmt_response callback in struct scsi_host_template to
struct scsi_transport_template since struct scsi_transport_template is
more suitable for the task management stuff.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/scsi_tgt_lib.c

@@ -577,7 +577,7 @@ int scsi_tgt_kspace_tsk_mgmt(int host_no, u64 itn_id, u64 mid, int result)
 		goto done;
 	}
 
-	err = shost->hostt->tsk_mgmt_response(shost, itn_id, mid, result);
+	err = shost->transportt->tsk_mgmt_response(shost, itn_id, mid, result);
 done:
 	scsi_host_put(shost);
 	return err;