Update git submodules

* Update docs/submodules/portal.git from branch 'master'
  to c2502f81cc07d6b6c619d334f7e81ea82e47223a
  - PeerBroadcastSocket sonar issues fix and code refactor

    Sonar issues fix and code refactor.
    Session data save moved to another method.
    Rest of code don't really do anything.

    Issue-ID: PORTAL-624
    Change-Id: I53b36377f2d2645d8c24ad2384959f0599e07303
    Signed-off-by: Dominik Mizyn <d.mizyn@samsung.com>

diff --git a/docs/submodules/portal.git b/docs/submodules/portal.git
index 6a9580d..c2502f8 160000 (submodule)
--- a/docs/submodules/portal.git
+++ b/docs/submodules/portal.git
@@ -1 +1 @@
-Subproject commit 6a9580d025114106e82fc49da895bbc857a3e91b
+Subproject commit c2502f81cc07d6b6c619d334f7e81ea82e47223a