Input: serio_driver - mark id_table and description as const

Memory pointed to by these fields is not supposed to change.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

include/linux/serio.h

@@ -55,9 +55,9 @@ struct serio {
 
 struct serio_driver {
 	void *private;
-	char *description;
+	const char *description;
 
-	struct serio_device_id *id_table;
+	const struct serio_device_id *id_table;
 	bool manual_bind;
 
 	void (*write_wakeup)(struct serio *);