sparc: Move core of OF device tree building code into prom_common.c

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/prom.h b/arch/sparc/kernel/prom.h
index d14b4ae..dea8b91 100644
--- a/arch/sparc/kernel/prom.h
+++ b/arch/sparc/kernel/prom.h
@@ -15,7 +15,20 @@
 
 extern unsigned int prom_unique_id;
 
-extern struct device_node * __init create_node(phandle node,
-					       struct device_node *parent);
+static inline int is_root_node(const struct device_node *dp)
+{
+	if (!dp)
+		return 0;
 
+	return (dp->parent == NULL);
+}
+
+extern char *build_path_component(struct device_node *dp);
+
+extern struct device_node * __init prom_create_node(phandle node,
+						    struct device_node *parent);
+
+extern struct device_node * __init prom_build_tree(struct device_node *parent,
+						   phandle node,
+						   struct device_node ***nextp);
 #endif /* __PROM_H */