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/0012-implement-buffer-wrapping-interface-for-dispmanx.patch b/meta-raspberrypi/recipes-graphics/userland/files/0012-implement-buffer-wrapping-interface-for-dispmanx.patch
index 9684b4c..40666fd 100644
--- a/meta-raspberrypi/recipes-graphics/userland/files/0012-implement-buffer-wrapping-interface-for-dispmanx.patch
+++ b/meta-raspberrypi/recipes-graphics/userland/files/0012-implement-buffer-wrapping-interface-for-dispmanx.patch
@@ -1,4 +1,4 @@
-From fedd7668152049c15ed58c7058e5f4a9c1fac7cb Mon Sep 17 00:00:00 2001
+From 27194bc05a7a488827590208285a8757164edcef Mon Sep 17 00:00:00 2001
 From: Khem Raj <raj.khem@gmail.com>
 Date: Sat, 2 Apr 2016 10:54:59 -0700
 Subject: [PATCH 12/18] implement buffer wrapping interface for dispmanx
@@ -88,5 +88,5 @@
  
  </protocol>
 -- 
-2.19.1
+2.20.1