Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [submodule] Bump Pharos for Armband IDF changes

    Bring in arm-pod5 hugepage configuration et al.

    Change-Id: If8a2f9cd84b400c5a8a58fe477f8ef7a12c42bf8
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 3fdf9a9..7f47d25 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 3fdf9a951e8c7f5387b90d020ea6db38d85f3dd4
+Subproject commit 7f47d25bc3a25ad2cdd564100cdc703ae85702b4