sata_highbank: use ATA_BUSY

ahci_highbank_hardreset() uses bare number for the BSY bit of the ATA status
register, despite it is #define'd in <linux/ata.h>

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/sata_highbank.c

@@ -213,7 +213,7 @@ static int ahci_highbank_hardreset(struct ata_link *link, unsigned int *class,
 
 	/* clear D2H reception area to properly wait for D2H FIS */
 	ata_tf_init(link->device, &tf);
-	tf.command = 0x80;
+	tf.command = ATA_BUSY;
 	ata_tf_to_fis(&tf, 0, 0, d2h_fis);
 
 	do {