[POWERPC] Constify of_platform_driver name

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

include/linux/of_platform.h

@@ -31,7 +31,7 @@ extern struct bus_type of_platform_bus_type;
  */
 struct of_platform_driver
 {
-	char			*name;
+	const char		*name;
 	struct of_device_id	*match_table;
 	struct module		*owner;