Add missing copyright notices

src/qt/qt_util.cpp

@@ -1,3 +1,19 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Utility functions.
+ *
+ *
+ *
+ * Authors:	Teemu Korhonen
+ *
+ *		Copyright 2022 Teemu Korhonen
+ */
 #include <QStringBuilder>
 #include <QStringList>
 #include "qt_util.hpp"
@@ -28,4 +44,4 @@ namespace util
         return " (" % temp.join(' ') % ")" % (!last ? ";;" : "");
     }
 
-}
+}