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/documentation/ref-manual/resources.xml b/poky/documentation/ref-manual/resources.xml
index be04696..6a0cee8 100644
--- a/poky/documentation/ref-manual/resources.xml
+++ b/poky/documentation/ref-manual/resources.xml
@@ -155,7 +155,7 @@
                 </para></listitem>
             <listitem><para>
                 <emphasis>
-                <ulink url='&YOCTO_DOCS_BB_URL;'>BitBake User Manual:</ulink>
+                <ulink url='&YOCTO_DOCS_BB_URL;'>BitBake User Manual</ulink>:
                 </emphasis>
                 A comprehensive guide to the BitBake tool.
                 If you want information on BitBake, see this manual.