of: use __be32 types for big-endian device tree data

Use the sparse annotations so we can keep track of endianness.

Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/of/address.c b/drivers/of/address.c
index fcadb72..3a1c7e7 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -163,7 +163,7 @@
 const u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size,
 			unsigned int *flags)
 {
-	const u32 *prop;
+	const __be32 *prop;
 	unsigned int psize;
 	struct device_node *parent;
 	struct of_bus *bus;