Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Fix removal of kernel directories in repo archiver

    Removal of these directories was silently failing due to the '-f' flag
    of rm. Unquoting '{..}' allows bash to corretly interpret the brace
    expansion.

    Change-Id: I315c63b5eb26fd3780632da0961a0eaf86439ae3
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 122cf34..f336990 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 122cf34bf3e656e1b7fa35e07dd8a71e42ed4d59
+Subproject commit f336990e8804d33cd643a2bf5172a1d1730a46b8