ipr/sas_ata: use mode mask macros from <linux/ata.h>

Commit 14bdef982caeda19afe34010482867c18217c641 ([libata] convert drivers to
use ata.h mode mask defines) didn't convert these two libata driver outside
drivers/ata/...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 8f56d5f..fc6bdc5 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -374,8 +374,8 @@
 static struct ata_port_info sata_port_info = {
 	.flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
 		ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NCQ,
-	.pio_mask = 0x1f, /* PIO0-4 */
-	.mwdma_mask = 0x07, /* MWDMA0-2 */
+	.pio_mask = ATA_PIO4,
+	.mwdma_mask = ATA_MWDMA2,
 	.udma_mask = ATA_UDMA6,
 	.port_ops = &sas_sata_ops
 };