microblaze: remove references to of_device and to_of_device

of_device is just a #define alias to platform_device.  This patch
replaces all references to it with platform_device.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

arch/microblaze/kernel/of_platform.c

@@ -50,16 +50,16 @@ const struct of_device_id of_default_bus_ids[] = {
 
 static int of_dev_node_match(struct device *dev, void *data)
 {
-	return to_of_device(dev)->dev.of_node == data;
+	return to_platform_device(dev)->dev.of_node == data;
 }
 
-struct of_device *of_find_device_by_node(struct device_node *np)
+struct platform_device *of_find_device_by_node(struct device_node *np)
 {
 	struct device *dev;
 
 	dev = bus_find_device(&platform_bus_type, NULL, np, of_dev_node_match);
 	if (dev)
-		return to_of_device(dev);
+		return to_platform_device(dev);
 	return NULL;
 }
 EXPORT_SYMBOL(of_find_device_by_node);