Input: gameport_driver - mark description as const pointer

Memory pointed to by the pointer should not change.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/gameport.h b/include/linux/gameport.h
index 361d1cc..632d126 100644
--- a/include/linux/gameport.h
+++ b/include/linux/gameport.h
@@ -55,7 +55,7 @@
 struct gameport_driver {
 
 	void *private;
-	char *description;
+	const char *description;
 
 	int (*connect)(struct gameport *, struct gameport_driver *drv);
 	int (*reconnect)(struct gameport *);