ide: sanitize ACPI initialization

* ide_acpi_init() -> ide_acpi_init_port()

* ide_acpi_blacklist() -> ide_acpi_init()

* Call ide_acpi_init() only once (do it during IDE core
  initialization) and cleanup the function accordingly.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 0920e3b..c779aa2 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -527,6 +527,8 @@
 		goto out_port_class;
 	}
 
+	ide_acpi_init();
+
 	proc_ide_create();
 
 	return 0;