Update git submodules

* Update docs/submodules/releng from branch 'master'
  to dece25372d52734a58f00bb1547195e9e138625a
  - Update buildargs logic

    Change-Id: I393e5669f190ddf81cf2afcc9e153809686d5f1c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 492c285..dece253 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 492c28556906ef83b8fd300ad71003dd7b0c0560
+Subproject commit dece25372d52734a58f00bb1547195e9e138625a