Add copyright comment to systems_utils.hpp

Added the missing copyright comment at top of the file.

Tested: Code compiles.

Change-Id: I7dfd32c9bb26223e7dafe5ab4da7aad6eabc116c
Signed-off-by: Oliver Brewka <oliver.brewka@9elements.com>
diff --git a/redfish-core/include/utils/systems_utils.hpp b/redfish-core/include/utils/systems_utils.hpp
index 5eec0b2..303e846 100644
--- a/redfish-core/include/utils/systems_utils.hpp
+++ b/redfish-core/include/utils/systems_utils.hpp
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: Copyright OpenBMC Authors
 #pragma once
 
 #include "bmcweb_config.h"