reset upstream subtrees to yocto 2.6

Reset the following subtrees on thud HEAD:

  poky: 87e3a9739d
  meta-openembedded: 6094ae18c8
  meta-security: 31dc4e7532
  meta-raspberrypi: a48743dc36
  meta-xilinx: c42016e2e6

Also re-apply backports that didn't make it into thud:
  poky:
    17726d0 systemd-systemctl-native: handle Install wildcards

  meta-openembedded:
    4321a5d libtinyxml2: update to 7.0.1
    042f0a3 libcereal: Add native and nativesdk classes
    e23284f libcereal: Allow empty package
    030e8d4 rsyslog: curl-less build with fmhttp PACKAGECONFIG
    179a1b9 gtest: update to 1.8.1

Squashed OpenBMC subtree compatibility updates:
  meta-aspeed:
    Brad Bishop (1):
          aspeed: add yocto 2.6 compatibility

  meta-ibm:
    Brad Bishop (1):
          ibm: prepare for yocto 2.6

  meta-ingrasys:
    Brad Bishop (1):
          ingrasys: set layer compatibility to yocto 2.6

  meta-openpower:
    Brad Bishop (1):
          openpower: set layer compatibility to yocto 2.6

  meta-phosphor:
    Brad Bishop (3):
          phosphor: set layer compatibility to thud
          phosphor: libgpg-error: drop patches
          phosphor: react to fitimage artifact rename

    Ed Tanous (4):
          Dropbear: upgrade options for latest upgrade
          yocto2.6: update openssl options
          busybox: remove upstream watchdog patch
          systemd: Rebase CONFIG_CGROUP_BPF patch

Change-Id: I7b1fe71cca880d0372a82d94b5fd785323e3a9e7
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openembedded/meta-oe/recipes-extended/pmdk/files/0002-Makefile-Don-t-install-the-docs.patch b/meta-openembedded/meta-oe/recipes-extended/pmdk/files/0002-Makefile-Don-t-install-the-docs.patch
new file mode 100644
index 0000000..bd1b97c
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-extended/pmdk/files/0002-Makefile-Don-t-install-the-docs.patch
@@ -0,0 +1,26 @@
+From 460a96e390cb80278784cfe36629e280fe7ffef7 Mon Sep 17 00:00:00 2001
+From: Alistair Francis <alistair.francis@wdc.com>
+Date: Mon, 23 Jul 2018 11:31:17 -0700
+Subject: [PATCH 2/2] Makefile: Don't install the docs
+
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
+Upstream-Status: Inappropriate [disable feature]
+---
+ Makefile | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 224a315f6..ce7f84afb 100644
+--- a/Makefile
++++ b/Makefile
+@@ -144,7 +144,6 @@ rpm dpkg: pkg-clean source
+ 
+ install uninstall:
+ 	$(MAKE) -C src $@
+-	$(MAKE) -C doc $@
+ 
+ .PHONY: all clean clobber test check cstyle check-license install uninstall\
+ 	source rpm dpkg pkg-clean pcheck check-remote format doc $(SUBDIRS)
+-- 
+2.17.1
+