Update copyright notices

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
diff --git a/sta.c b/sta.c
index c1fd492..008f102 100644
--- a/sta.c
+++ b/sta.c
@@ -2,7 +2,7 @@
  * Sigma Control API DUT (station/AP)
  * Copyright (c) 2010-2011, Atheros Communications, Inc.
  * Copyright (c) 2011-2017, Qualcomm Atheros, Inc.
- * Copyright (c) 2018, The Linux Foundation
+ * Copyright (c) 2018-2021, The Linux Foundation
  * All Rights Reserved.
  * Licensed under the Clear BSD license. See README for more details.
  */