licenses: Add missing licenses

Add missing license texts for licenses used in the project. The license
texts have been retrieved using 'reuse download' ([1]).

[1] https://reuse.software/

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 468 insertions, 0 deletions

diff --git a/LICENSES/LGPL-2.1-or-later.txt b/LICENSES/LGPL-2.1-or-later.txt
new file mode 100644
index 00000000..04bb156e
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+++ b/LICENSES/LGPL-2.1-or-later.txt
@@ -0,0 +1,468 @@
+GNU LESSER GENERAL PUBLIC LICENSE
+
+Version 2.1, February 1999
+
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+Everyone is permitted to copy and distribute verbatim copies of this license
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