sata_promise: use ata_cable_sata()

Use core helper instead of open-coding it.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/ata/sata_promise.c

@@ -157,7 +157,6 @@ static int pdc_sata_hardreset(struct ata_link *link, unsigned int *class,
 static void pdc_error_handler(struct ata_port *ap);
 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
 static int pdc_pata_cable_detect(struct ata_port *ap);
-static int pdc_sata_cable_detect(struct ata_port *ap);
 
 static struct scsi_host_template pdc_ata_sht = {
 	ATA_BASE_SHT(DRV_NAME),
@@ -183,7 +182,7 @@ static const struct ata_port_operations pdc_common_ops = {
 
 static struct ata_port_operations pdc_sata_ops = {
 	.inherits		= &pdc_common_ops,
-	.cable_detect		= pdc_sata_cable_detect,
+	.cable_detect		= ata_cable_sata,
 	.freeze			= pdc_sata_freeze,
 	.thaw			= pdc_sata_thaw,
 	.scr_read		= pdc_sata_scr_read,
@@ -459,11 +458,6 @@ static int pdc_pata_cable_detect(struct ata_port *ap)
 	return ATA_CBL_PATA80;
 }
 
-static int pdc_sata_cable_detect(struct ata_port *ap)
-{
-	return ATA_CBL_SATA;
-}
-
 static int pdc_sata_scr_read(struct ata_link *link,
 			     unsigned int sc_reg, u32 *val)
 {