Include 2020 year in Arm Copyright

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: I4d8b5c48c98658d014b6b220a1a37c389cd79778
diff --git a/sgm775_utils.sh b/sgm775_utils.sh
index f9e0dd9..b751b9d 100644
--- a/sgm775_utils.sh
+++ b/sgm775_utils.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2019, Arm Limited. All rights reserved.
+# Copyright (c) 2019-2020 Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #