[calls] ui-call-data: Add license header

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit 36c4f2b349269853a1b42554414ea6b115f2b043
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Thu Jan 13 16:10:50 2022 +0100

    ui-call-data: Add license header

 src/calls-ui-call-data.c | 23 +++++++++++++++++++++++
 src/calls-ui-call-data.h | 24 ++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
---
diff --git a/src/calls-ui-call-data.c b/src/calls-ui-call-data.c
index b8e363d3..19ddb396 100644
--- a/src/calls-ui-call-data.c
+++ b/src/calls-ui-call-data.c
@@ -1,3 +1,26 @@
+/*
+ * Copyright (C) 2021, 2022 Purism SPC
+ *
+ * This file is part of Calls.
+ *
+ * Calls is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Calls is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Calls.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
 
 #include "calls-ui-call-data.h"
 #include "calls-contacts-provider.h"
diff --git a/src/calls-ui-call-data.h b/src/calls-ui-call-data.h
index 41a24a8d..66499ae0 100644
--- a/src/calls-ui-call-data.h
+++ b/src/calls-ui-call-data.h
@@ -1,3 +1,27 @@
+/*
+ * Copyright (C) 2021, 2022 Purism SPC
+ *
+ * This file is part of Calls.
+ *
+ * Calls is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Calls is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Calls.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
 #pragma once
 
 #include "calls-call.h"