Update git submodules

* Update docs/submodules/onosfw from branch 'master'
  - Merge "onosfw upgradation for danube"
  - onosfw upgradation for danube

    Change-Id: I60495508863c8bb4c221d232a5d9956371c293d9
    Signed-off-by: rssaravana <saravanakumar.somaskandan@huawei.com>

diff --git a/docs/submodules/onosfw b/docs/submodules/onosfw
index 0570a96..fa4c5bb 160000 (submodule)
--- a/docs/submodules/onosfw
+++ b/docs/submodules/onosfw
@@ -1 +1 @@
-Subproject commit 0570a96f65db547dcf2f88ac71dfad9b17a07649
+Subproject commit fa4c5bb4418f9b8bd3e8776c1a5e154f0e85dcd8