Re-license left over source files from EPL-1.0 to EPL-2.0

As reported during the release review for v0.7, some files still contained EPL-1.0. These have been updated in this merge request.

Explicit approval is required by the copyright holders of the source code. In this case, HLRS, University of Stuttgart and intech have to approve.

sim/src/common/opExport.h

 /******************************************************************************
 * Copyright (c) 2020 HLRS, University of Stuttgart.
 *
-* All rights reserved. This program and the accompanying materials
-* are made available under the terms of the Eclipse Public License v1.0
-* which accompanies this distribution, and is available at
-* http://www.eclipse.org/legal/epl-v10.html
+* This program and the accompanying materials are made
+* available under the terms of the Eclipse Public License 2.0
+* which is available at https://www.eclipse.org/legal/epl-2.0/
+*
+* SPDX-License-Identifier: EPL-2.0
 ******************************************************************************/
 
 #ifndef OPEXPORT_H