ide: add struct ide_port_ops (take 2)

* Move hooks for port/host specific methods from ide_hwif_t to
  'struct ide_port_ops'.

* Add 'const struct ide_port_ops *port_ops' to 'struct ide_port_info'
  and ide_hwif_t.

* Update host drivers and core code accordingly.

While at it:

* Rename ata66_*() cable detect functions to *_cable_detect() to match
  the standard naming. (Suggested by Sergei Shtylyov)

v2:
* Fix build for bast-ide. (Noticed by Andrew Morton)

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
index b97b8d51..c491850 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -143,6 +143,10 @@
     kfree(link->priv);
 } /* ide_detach */
 
+static const struct ide_port_ops idecs_port_ops = {
+	.quirkproc		= ide_undecoded_slave,
+};
+
 static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq, struct pcmcia_device *handle)
 {
     ide_hwif_t *hwif;
@@ -168,7 +172,7 @@
 	ide_init_port_data(hwif, i);
 
     ide_init_port_hw(hwif, &hw);
-    hwif->quirkproc = &ide_undecoded_slave;
+    hwif->port_ops = &idecs_port_ops;
 
     idx[0] = i;