ide: remove [ata_]select_t

* Use 'drive->dn & 1' in ide_init_disk().

* remove [ata_]select_t.

While at it:

* Use ATA_DEVICE_OBS define in ide_port_init_devices_data().

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide.c

@@ -114,7 +114,7 @@ static void ide_port_init_devices_data(ide_hwif_t *hwif)
 		memset(drive, 0, sizeof(*drive));
 
 		drive->media			= ide_disk;
-		drive->select.all		= (unit<<4)|0xa0;
+		drive->select			= (unit << 4) | ATA_DEVICE_OBS;
 		drive->hwif			= hwif;
 		drive->ready_stat		= ATA_DRDY;
 		drive->bad_wstat		= BAD_W_STAT;