Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 70a324757a9d6f44155a38b989f2a252a1f4b5a1
  - Prepare Yoga branches

    Change-Id: I0d91286198113949bc7c9fc8edd71170e5e0cee2
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index b10bd2e..70a3247 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit b10bd2efe7da38156f48feeadbf2765249e9d84d
+Subproject commit 70a324757a9d6f44155a38b989f2a252a1f4b5a1