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/recipes-kernel/systemtap/systemtap_git.inc b/poky/meta/recipes-kernel/systemtap/systemtap_git.inc
index 274fcde..54de722 100644
--- a/poky/meta/recipes-kernel/systemtap/systemtap_git.inc
+++ b/poky/meta/recipes-kernel/systemtap/systemtap_git.inc
@@ -1,6 +1,6 @@
 LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263"
-SRCREV = "428f84e9e656bce71018e8902e4edb8aacafcc0e"
+SRCREV = "90ff34ac0506f0d5440393a4c78565f6aaf9b726"
 PV = "4.0"
 
 SRC_URI = "git://sourceware.org/git/systemtap.git \