[POWERPC] 4xx: Mark of_bus structures as __initdata

Mark the of_device_id structures used to probe the various busses on 4xx
as __initdata.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/powerpc/platforms/40x/ep405.c b/arch/powerpc/platforms/40x/ep405.c
index 759d937..8f73b62 100644
--- a/arch/powerpc/platforms/40x/ep405.c
+++ b/arch/powerpc/platforms/40x/ep405.c
@@ -48,7 +48,7 @@
 /* there's more, can't be bothered typing them tho */
 
 
-static struct of_device_id ep405_of_bus[] = {
+static __initdata struct of_device_id ep405_of_bus[] = {
 	{ .compatible = "ibm,plb3", },
 	{ .compatible = "ibm,opb", },
 	{ .compatible = "ibm,ebc", },