ide: move Power Management support to ide-pm.c

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

include/linux/ide.h

@@ -1116,6 +1116,14 @@ enum {
 	IDE_PM_COMPLETED,
 };
 
+int generic_ide_suspend(struct device *, pm_message_t);
+int generic_ide_resume(struct device *);
+
+void ide_complete_power_step(ide_drive_t *, struct request *);
+ide_startstop_t ide_start_power_step(ide_drive_t *, struct request *);
+void ide_complete_pm_request(ide_drive_t *, struct request *);
+void ide_check_pm_state(ide_drive_t *, struct request *);
+
 /*
  * Subdrivers support.
  *