ide: use ide_remove_port_from_hwgroup in init_irq()

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 4d8c12c..ec10b2a 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1191,6 +1191,7 @@
 static inline void ide_acpi_set_state(ide_hwif_t *hwif, int on) {}
 #endif
 
+void ide_remove_port_from_hwgroup(ide_hwif_t *);
 extern int ide_hwif_request_regions(ide_hwif_t *hwif);
 extern void ide_hwif_release_regions(ide_hwif_t* hwif);
 extern void ide_unregister (unsigned int index);