ide: mark "ide=reverse" option as obsolete

- it is valid only if "Probe IDE PCI devices in the PCI bus order
  (DEPRECATED)" config option is used

- Greg needs to remove pci_get_device_reverse() for PCI core changes

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/ide/ide.c

@@ -1229,7 +1229,7 @@ static int __init ide_setup(char *s)
 	if (!strcmp(s, "ide=reverse")) {
 		ide_scan_direction = 1;
 		printk(" : Enabled support for IDE inverse scan order.\n");
-		return 1;
+		goto obsolete_option;
 	}
 #endif