[libata] convert drivers to use ata.h mode mask defines

No functional changes in this patch.

Signed-off-by: Erik Inge Bolsø <knan-lkml@anduin.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index fbfee1b..2f3b49c 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -89,7 +89,7 @@
 	ap = ah->ports[0];
 
 	ap->ops		= &rb532_pata_port_ops;
-	ap->pio_mask	= 0x1f; /* PIO4 */
+	ap->pio_mask	= ATA_PIO4;
 	ap->flags	= ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO;
 
 	ap->ioaddr.cmd_addr	= info->iobase + RB500_CF_REG_BASE;