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/poky/meta/conf/distro/include/default-providers.inc b/poky/meta/conf/distro/include/default-providers.inc
index 019ceeb..2141903 100644
--- a/poky/meta/conf/distro/include/default-providers.inc
+++ b/poky/meta/conf/distro/include/default-providers.inc
@@ -54,3 +54,5 @@
 PREFERRED_PROVIDER_nativesdk-pkgconfig ?= "nativesdk-pkgconfig"
 PREFERRED_PROVIDER_pkgconfig-native ?= "pkgconfig-native"
 PREFERRED_RPROVIDER_initd-functions ?= "initscripts"
+
+PREFERRED_PROVIDER_nativesdk-mesa ?= "nativesdk-mesa"