[SPARC]: Make device_node name and type const

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/asm-sparc/prom.h

@@ -35,8 +35,8 @@ struct property {
 };
 
 struct device_node {
-	char	*name;
-	char	*type;
+	const char	*name;
+	const char	*type;
 	phandle	node;
 	char	*path_component_name;
 	char	*full_name;

include/asm-sparc64/prom.h

@@ -36,8 +36,8 @@ struct property {
 
 struct of_irq_controller;
 struct device_node {
-	char	*name;
-	char	*type;
+	const char	*name;
+	const char	*type;
 	phandle	node;
 	char	*path_component_name;
 	char	*full_name;