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>
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 0eced0a..c2e85fc 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -705,7 +705,7 @@
 		scc_ide_outb(tf->lbah, io_ports->lbah_addr);
 
 	if (task->tf_flags & IDE_TFLAG_OUT_DEVICE)
-		scc_ide_outb((tf->device & HIHI) | drive->select.all,
+		scc_ide_outb((tf->device & HIHI) | drive->select,
 			     io_ports->device_addr);
 }