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/0017-khronos-backport-typedef-for-EGL_EXT_image_dma_buf_i.patch b/meta-raspberrypi/recipes-graphics/userland/files/0017-khronos-backport-typedef-for-EGL_EXT_image_dma_buf_i.patch
index 546cd58..9c223ab 100644
--- a/meta-raspberrypi/recipes-graphics/userland/files/0017-khronos-backport-typedef-for-EGL_EXT_image_dma_buf_i.patch
+++ b/meta-raspberrypi/recipes-graphics/userland/files/0017-khronos-backport-typedef-for-EGL_EXT_image_dma_buf_i.patch
@@ -1,4 +1,4 @@
-From 8efd81e96bdd3be68063a6fd32be4755225e93b2 Mon Sep 17 00:00:00 2001
+From 0d3c6b7ca5d352cc00d9501b9d5576c4ece70a83 Mon Sep 17 00:00:00 2001
 From: Hugo Hromic <hhromic@gmail.com>
 Date: Sun, 13 May 2018 10:49:04 +0100
 Subject: [PATCH 17/18] khronos: backport typedef for
@@ -34,5 +34,5 @@
  #ifndef EGL_WL_bind_wayland_display
  #define EGL_WL_bind_wayland_display 1
 -- 
-2.19.1
+2.20.1