ppc/8xxx: Delete PCI nodes from device tree if not configured

If the PCI controller wasn't configured or enabled delete from the
device tree (include its alias).

For the case that we didn't even configure u-boot with knowledge of
the controller we can use the fact that the pci_controller pointer
is NULL to delete the node in the device tree.  We determine that
a controller was not setup (because of HW config) based on the fact
that cfg_addr wasn't setup.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

drivers/pci/fsl_pci_init.c

 /*
- * Copyright 2007-2009 Freescale Semiconductor, Inc.
+ * Copyright 2007-2010 Freescale Semiconductor, Inc.
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * Version 2 as published by the Free Software Foundation.
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -513,10 +514,15 @@ void ft_fsl_pci_setup(void *blob, const char *pci_alias,
 			struct pci_controller *hose)
 {
 	int off = fdt_path_offset(blob, pci_alias);
+	u32 bus_range[2];
 
-	if (off >= 0) {
-		u32 bus_range[2];
+	if (off < 0)
+		return;
 
+	/* We assume a cfg_addr not being set means we didn't setup the controller */
+	if ((hose == NULL) || (hose->cfg_addr == NULL)) {
+		fdt_del_node_and_alias(blob, pci_alias);
+	} else {
 		bus_range[0] = 0;
 		bus_range[1] = hose->last_busno - hose->first_busno;
 		fdt_setprop(blob, off, "bus-range", &bus_range[0], 2*4);