Update git submodules

* Update docs/submodules/armband from branch 'master'
  - Baremetal support for MCP on AArch64

    NOTE: Armband moves MaaS IPs to x.y.z.2 (from x.y.z.3) due to address
    overlap with IPMI static IPs residing in the same range.

    Change-Id: I2fc9539afe921d2704e7f5ff615ccd86d0914b7b
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index d81ba0a..55dabaa 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit d81ba0acaf68ad4d5e8db943395431558d77b638
+Subproject commit 55dabaa703f90f77cecb841a3b5c4ef64b205439