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/legacy/falconide.c b/drivers/ide/legacy/falconide.c
index 129a812..1bb2aa7 100644
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -91,8 +91,8 @@
 
 static int __init falconide_init(void)
 {
-	hw_regs_t hw;
 	ide_hwif_t *hwif;
+	hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
 
 	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
 		return 0;
@@ -111,14 +111,12 @@
 		u8 index = hwif->index;
 		u8 idx[4] = { index, 0xff, 0xff, 0xff };
 
-		ide_init_port_hw(hwif, &hw);
-
 		/* Atari has a byte-swapped IDE interface */
 		hwif->input_data  = falconide_input_data;
 		hwif->output_data = falconide_output_data;
 
 		ide_get_lock(NULL, NULL);
-		ide_device_add(idx, NULL);
+		ide_device_add(idx, NULL, hws);
 		ide_release_lock();
 	}