Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Merge "[patch] AArch64: reclass system arch tweaks"
  - [patch] AArch64: reclass system arch tweaks

    Armband has been carrying a few arch-enablement patches that are
    required for the default reclass system classes to work as expected
    on AArch64 systems.

    Change-Id: I1f96c062eb3f9dcabb8513aadd1ea41be4fbc098
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 0f9744c..9d47d1d 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 0f9744c1fd97bfd102d14104516059b17190b288
+Subproject commit 9d47d1dfc5d3ee4a618b5a4e247774c903dbec50