Fix/Update copyright notices; Add SPDX annotation

Let's fix some erroneous/accidential references to wrong license,
update copyright information where applicable and introduce a
SPDX-License-Identifier to all files.

Change-Id: I39af26c6aaaf5c926966391f6565fc5936be21af

1 files changed, 5 insertions, 1 deletions

diff --git a/src/prbs.c b/src/prbs.c
index be52fd4c..8fa04bb7 100644
--- a/src/prbs.c
+++ b/src/prbs.c
@@ -1,5 +1,9 @@
 /* Osmocom implementation of pseudo-random bit sequence generation */
-/* (C) 2017 by Harald Welte <laforge@gnumonks.org> */
+/* (C) 2017 by Harald Welte <laforge@gnumonks.org> 
+ * All Rights Reserved
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ * */
 
 #include <stdint.h>
 #include <string.h>