reset upstream subtrees to HEAD

Reset the following subtrees on HEAD:
  poky: 8217b477a1(master)
  meta-xilinx: 64aa3d35ae(master)
  meta-openembedded: 0435c9e193(master)
  meta-raspberrypi: 490a4441ac(master)
  meta-security: cb6d1c85ee(master)

Squashed patches:
  meta-phosphor: drop systemd 239 patches
  meta-phosphor: mrw-api: use correct install path

Change-Id: I268e2646d9174ad305630c6bbd3fbc1a6105f43d
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-raspberrypi/recipes-graphics/userland/files/0011-build-shared-library-for-vchostif.patch b/meta-raspberrypi/recipes-graphics/userland/files/0011-build-shared-library-for-vchostif.patch
index 4bd5320..da37102 100644
--- a/meta-raspberrypi/recipes-graphics/userland/files/0011-build-shared-library-for-vchostif.patch
+++ b/meta-raspberrypi/recipes-graphics/userland/files/0011-build-shared-library-for-vchostif.patch
@@ -1,4 +1,4 @@
-From 9a97d60262999093d6ce8cb688279506c210d802 Mon Sep 17 00:00:00 2001
+From 5bc4118e7861f35ead6565530cb4213987296fb9 Mon Sep 17 00:00:00 2001
 From: Khem Raj <raj.khem@gmail.com>
 Date: Sat, 2 Apr 2016 10:37:24 -0700
 Subject: [PATCH 11/18] build shared library for vchostif
@@ -24,5 +24,5 @@
  #add_library(bufman            vc_vchi_bufman.c            )
  
 -- 
-2.19.1
+2.20.1