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/0004-wayland-egl-Add-bcm_host-to-dependencies.patch b/meta-raspberrypi/recipes-graphics/userland/files/0004-wayland-egl-Add-bcm_host-to-dependencies.patch
index a42aa14..9621afa 100644
--- a/meta-raspberrypi/recipes-graphics/userland/files/0004-wayland-egl-Add-bcm_host-to-dependencies.patch
+++ b/meta-raspberrypi/recipes-graphics/userland/files/0004-wayland-egl-Add-bcm_host-to-dependencies.patch
@@ -1,4 +1,4 @@
-From c379bd2dc575256084d9e36fc11a347e20660130 Mon Sep 17 00:00:00 2001
+From 3d1d046281b90d6777864b0d9a032657fad78d76 Mon Sep 17 00:00:00 2001
 From: Khem Raj <raj.khem@gmail.com>
 Date: Mon, 10 Aug 2015 02:38:27 -0700
 Subject: [PATCH 04/18] wayland-egl: Add bcm_host to dependencies
@@ -24,5 +24,5 @@
  Libs: -L${libdir} -lwayland-egl
  Cflags: -I${includedir}
 -- 
-2.19.1
+2.20.1