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/scripts/lib/devtool/__init__.py b/poky/scripts/lib/devtool/__init__.py
index 89f098a..8fc7fff 100644
--- a/poky/scripts/lib/devtool/__init__.py
+++ b/poky/scripts/lib/devtool/__init__.py
@@ -205,6 +205,7 @@
     import oe.patch
     if not os.path.exists(os.path.join(repodir, '.git')):
         bb.process.run('git init', cwd=repodir)
+        bb.process.run('git config --local gc.autodetach 0', cwd=repodir)
         bb.process.run('git add .', cwd=repodir)
         commit_cmd = ['git']
         oe.patch.GitApplyTree.gitCommandUserOptions(commit_cmd, d=d)