scsi: pm80xx: Replace open coded check with dev_is_expander()

This is a follow up cleanup to the commit 924a3541 ("scsi: libsas:
aic94xx: hisi_sas: mvsas: pm8001: Use dev_is_expander()")

Link: https://lore.kernel.org/r/20210929025807.646589-1-ipylypiv@google.comReviewed-by: NVishakha Channapattan <vishakhavc@google.com>
Acked-by: NJack Wang <jinpu.wang@ionos.com>
Signed-off-by: NIgor Pylypiv <ipylypiv@google.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/pm8001/pm8001_hwi.c

@@ -4481,8 +4481,7 @@ static int pm8001_chip_reg_dev_req(struct pm8001_hba_info *pm8001_ha,
 		if (pm8001_dev->dev_type == SAS_SATA_DEV)
 			stp_sspsmp_sata = 0x00; /* stp*/
 		else if (pm8001_dev->dev_type == SAS_END_DEVICE ||
-			pm8001_dev->dev_type == SAS_EDGE_EXPANDER_DEVICE ||
-			pm8001_dev->dev_type == SAS_FANOUT_EXPANDER_DEVICE)
+			dev_is_expander(pm8001_dev->dev_type))
 			stp_sspsmp_sata = 0x01; /*ssp or smp*/
 	}
 	if (parent_dev && dev_is_expander(parent_dev->dev_type))

drivers/scsi/pm8001/pm80xx_hwi.c

@@ -4865,8 +4865,7 @@ static int pm80xx_chip_reg_dev_req(struct pm8001_hba_info *pm8001_ha,
 		if (pm8001_dev->dev_type == SAS_SATA_DEV)
 			stp_sspsmp_sata = 0x00; /* stp*/
 		else if (pm8001_dev->dev_type == SAS_END_DEVICE ||
-			pm8001_dev->dev_type == SAS_EDGE_EXPANDER_DEVICE ||
-			pm8001_dev->dev_type == SAS_FANOUT_EXPANDER_DEVICE)
+			dev_is_expander(pm8001_dev->dev_type))
 			stp_sspsmp_sata = 0x01; /*ssp or smp*/
 	}
 	if (parent_dev && dev_is_expander(parent_dev->dev_type))