ide: move ide_init_port_data() and friends to ide-probe.c

* Move IDE_DEFAULT_MAX_FAILURES to <linux/ide.h>.

* Move ide_cfg_mtx, ide_hwif_to_major[], ide_port_init_devices_data(),
  ide_init_port_data(), ide_init_port_hw() and ide_unregister() to
  ide-probe.c from ide.c.

* Make ide_unregister(), ide_init_port_data(), ide_init_port_hw()
  and ide_cfg_mtx static.

While at it:

* Remove stale ide_init_port_data() documentation and ide_lock extern.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index f27f130..ee2f461 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -37,6 +37,7 @@
 /*
  * Probably not wise to fiddle with these
  */
+#define IDE_DEFAULT_MAX_FAILURES	1
 #define ERROR_MAX	8	/* Max read/write errors per sector */
 #define ERROR_RESET	3	/* Reset controller every 4th retry */
 #define ERROR_RECAL	1	/* Recalibrate every 2nd retry */
@@ -184,9 +185,6 @@
 	unsigned long	config;
 } hw_regs_t;
 
-void ide_init_port_data(struct hwif_s *, unsigned int);
-void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
-
 static inline void ide_std_init_ports(hw_regs_t *hw,
 				      unsigned long io_addr,
 				      unsigned long ctl_addr)
@@ -1506,8 +1504,6 @@
 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
 #endif
 
-void ide_unregister(ide_hwif_t *);
-
 void ide_register_region(struct gendisk *);
 void ide_unregister_region(struct gendisk *);
 
@@ -1592,9 +1588,6 @@
 	ide_set_pio(drive, 255);
 }
 
-extern spinlock_t ide_lock;
-extern struct mutex ide_cfg_mtx;
-
 #define local_irq_set(flags)	do { local_save_flags((flags)); local_irq_enable_in_hardirq(); } while (0)
 
 char *ide_media_string(ide_drive_t *);