ppc/pmac: remove ppc_ide_md hooks

* Add pmac_ide_init_ports() helper and use it instead of
  pmac_ide_init_hwif_ports().

* Remove ppc_ide_md hooks - no need for them
  (IDE pmac host driver takes care of all this setup).

* Then remove no longer needed <linux/ide.h> include
  from arch/powerpc/platforms/powermac/pmac.h.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

arch/powerpc/platforms/powermac/pmac.h

@@ -2,7 +2,6 @@
 #define __PMAC_H__
 
 #include <linux/pci.h>
-#include <linux/ide.h>
 #include <linux/irq.h>
 
 /*
@@ -35,10 +34,6 @@ extern void pmac_check_ht_link(void);
 
 extern void pmac_setup_smp(void);
 
-extern unsigned long pmac_ide_get_base(int index);
-extern void pmac_ide_init_hwif_ports(hw_regs_t *hw,
-	unsigned long data_port, unsigned long ctrl_port, int *irq);
-
 extern int pmac_nvram_init(void);
 extern void pmac_pic_init(void);