[POWERPC] Add support for PCI-Express nodes in the device tree

This adds support to recognize the PCIe device_type "pciex" and made
the portdrv buildable.

Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index 57b539a..6eb7e49 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -313,7 +313,9 @@
 	for (node = of_get_next_child(root, NULL);
 	     node != NULL;
 	     node = of_get_next_child(root, node)) {
-		if (node->type == NULL || strcmp(node->type, "pci") != 0)
+
+		if (node->type == NULL || (strcmp(node->type, "pci") != 0 &&
+					   strcmp(node->type, "pciex") != 0))
 			continue;
 
 		phb = pcibios_alloc_controller(node);