license: Update wildcards for firmware

Fixes: #665

Author: timg236

LICENSE

@@ -6,10 +6,14 @@ Files: *
 Copyright: 2019, Raspberry Pi (Trading) Ltd.
 License: BSD-3
 
-Files: firmware/*
+Files: firmware-2711/*
 Copyright: 2019, Raspberry Pi (Trading) Ltd.
 License: custom
 
+Files: firmware-2712/*
+Copyright: 2024, Raspberry Pi (Trading) Ltd.
+License: custom
+
 License: BSD-3
  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions