panfrost: Update copyright identifiers

"Collabora, Ltd." should be listed in lieu of simply "Collabora"

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Suggested-by: Daniel Stone <daniels@collabora.com>
diff --git a/src/gallium/drivers/panfrost/pan_afbc.c b/src/gallium/drivers/panfrost/pan_afbc.c
index c9487b5..d812639 100644
--- a/src/gallium/drivers/panfrost/pan_afbc.c
+++ b/src/gallium/drivers/panfrost/pan_afbc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 Collabora
+ * Copyright (C) 2019 Collabora, Ltd.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),