scsi: pm8001: Rework shost initial values

Some values in pm8001_prep_sas_ha_init() are set the same as they would be
set in scsi_host_alloc(), or could be in the sht (which would be better),
or later just overwritten, so rework the following:

 - cmd_per_lun can be set in the sht

 - max_lun and max_channel are as scsi_host_alloc() (so no need to set)

 - can_queue is later overwritten (so don't set in
   pm8001_prep_sas_ha_init())

Link: https://lore.kernel.org/r/1654879602-33497-2-git-send-email-john.garry@huawei.comTested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/pm8001/pm8001_init.c

@@ -109,6 +109,7 @@ static struct scsi_host_template pm8001_sht = {
 #endif
 	.shost_groups		= pm8001_host_groups,
 	.track_queue_depth	= 1,
+	.cmd_per_lun		= 32,
 };
 
 /*
@@ -605,12 +606,8 @@ static int pm8001_prep_sas_ha_init(struct Scsi_Host *shost,
 
 	shost->transportt = pm8001_stt;
 	shost->max_id = PM8001_MAX_DEVICES;
-	shost->max_lun = 8;
-	shost->max_channel = 0;
 	shost->unique_id = pm8001_id;
 	shost->max_cmd_len = 16;
-	shost->can_queue = PM8001_CAN_QUEUE;
-	shost->cmd_per_lun = 32;
 	return 0;
 exit_free1:
 	kfree(arr_port);