ide: pass hw_regs_t-s to ide_device_add[_all]() (take 3)

* Add 'hw_regs_t **hws' argument to ide_device_add[_all]() and convert
  host drivers + ide_legacy_init_one() + ide_setup_pci_device[s]() to use
  it instead of calling ide_init_port_hw() directly.

  [ However if host has > 1 port we must still set hwif->chipset to hint
    consecutive ide_find_port() call that the previous slot is occupied. ]

* Unexport ide_init_port_hw().

v2:
* Use defines instead of hard-coded values in buddha.c, gayle.c and q40ide.c.
  (Suggested by Geert Uytterhoeven)

* Better patch description.

v3:
* Fix build problem in ide-cs.c. (Noticed by Stephen Rothwell)

There should be no functional changes caused by this patch.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index 992b1cf..a13f2bc 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -146,6 +146,7 @@
 static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	const struct ide_port_info *d = &cyrix_chipsets[id->driver_data];
+	hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
 	u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
 	ide_setup_pci_noise(dev, d);
@@ -168,9 +169,9 @@
 	 *	do all the device setup for us
 	 */
 
-	ide_pci_setup_ports(dev, d, 14, &idx[0]);
+	ide_pci_setup_ports(dev, d, 14, &idx[0], &hw[0], &hws[0]);
 
-	ide_device_add(idx, d);
+	ide_device_add(idx, d, hws);
 
 	return 0;
 }