ide: make ide_pc_intr() static

* Always use ide_pc_intr as a handler in ide_pc_intr().

* Remove no longer used ide*_pc_intr() and 'handler'
  argument from ide_{transfer_pc,pc_intr}().

* Make ide_pc_intr() static.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index f7fc53d..449a109 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1188,9 +1188,7 @@
 
 int ide_scsi_expiry(ide_drive_t *);
 
-ide_startstop_t ide_pc_intr(ide_drive_t *drive, ide_handler_t *handler);
-ide_startstop_t ide_transfer_pc(ide_drive_t *,
-				ide_handler_t *, unsigned int, ide_expiry_t *);
+ide_startstop_t ide_transfer_pc(ide_drive_t *, unsigned int, ide_expiry_t *);
 ide_startstop_t ide_issue_pc(ide_drive_t *,
 			     ide_handler_t *, unsigned int, ide_expiry_t *);