docs: licensing: update list of 3rd party code licensed under GPL

Update the list of 3rd party code licensed under the GPL.

Signed-off-by: Henrik Brix Andersen <[email protected]>

Author: henrikbrixandersen

doc/LICENSING.rst

@@ -20,3 +20,13 @@ licensing in this document.
   *Origin:* Linux Kernel
 
   *Licensing:* `GPLv2 License`_
+
+*scripts/{coccicheck,coccinelle/array_size.cocci,coccinelle/deref_null.cocci,coccinelle/deref_null.cocci,coccinelle/deref_null.cocci,coccinelle/mini_lock.cocci,coccinelle/mini_lock.cocci,coccinelle/mini_lock.cocci,coccinelle/noderef.cocci,coccinelle/noderef.cocci,coccinelle/returnvar.cocci,coccinelle/semicolon.cocci}*
+  *Origin:* Coccinelle
+
+  *Licensing:* `GPLv2 License`_
+
+*subsys/testsuite/coverage/coverage.h*
+  *Origin:* GCC, the GNU Compiler Collection
+
+  *Licensing:* `GPLv2 License`_ with Runtime Library Exception