ide: Fix drive's DWORD-IO handling

According the documentation, id[ATA_ID_DWORD_IO] is non-zero if
the drive supports dword IO, while the code disables support by
setting IDE_DFLAG_NO_IO_32BIT. In addition, this word has been
reused by the ATA8 specification. This patch fixes both cases.

Signed-off-by: Mario Schwalbe <schwalbe@inf.tu-dresden.de>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: remove id[ATA_ID_DWORD_IO] check altogether per Sergei's suggestion]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-probe.c

@@ -849,8 +849,7 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
 	}
 
 	ide_port_for_each_dev(i, drive, hwif) {
-		if ((hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) ||
-		    drive->id[ATA_ID_DWORD_IO])
+		if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT)
 			drive->dev_flags |= IDE_DFLAG_NO_IO_32BIT;
 		else
 			drive->dev_flags &= ~IDE_DFLAG_NO_IO_32BIT;