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/0006-Makefile.inc-Allow-extra-libs-to-be-specified.patch b/meta-openembedded/meta-oe/recipes-extended/pmdk/files/0006-Makefile.inc-Allow-extra-libs-to-be-specified.patch
new file mode 100644
index 0000000..2042fdb
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-extended/pmdk/files/0006-Makefile.inc-Allow-extra-libs-to-be-specified.patch
@@ -0,0 +1,29 @@
+From a88e806f9ce8cc071e81abad688643d53f393176 Mon Sep 17 00:00:00 2001
+From: Alistair Francis <alistair.francis@wdc.com>
+Date: Mon, 10 Sep 2018 14:18:38 -0700
+Subject: [PATCH 3/3] Makefile.inc: Allow extra libs to be specified
+
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
+Upstream-Status: Pending
+---
+ src/Makefile.inc       | 2 ++
+ src/common.inc         | 2 ++
+ src/tools/Makefile.inc | 1 +
+ 3 files changed, 5 insertions(+)
+
+diff --git a/src/common.inc b/src/common.inc
+index 032cb83ea..2d5c4bedf 100644
+--- a/src/common.inc
++++ b/src/common.inc
+@@ -74,6 +74,8 @@ GCOV_CFLAGS=-fprofile-arcs -ftest-coverage --coverage
+ GCOV_LDFLAGS=-fprofile-arcs -ftest-coverage
+ GCOV_LIBS=-lgcov
+ 
++LIBS += $(EXTRA_LIBS)
++
+ osdep = $(1)_$(shell uname -s | tr "[:upper:]" "[:lower:]")$(2)
+ get_arch = $(shell $(CC) -dumpmachine | awk -F'[/-]' '{print $$1}')
+ 
+-- 
+2.17.1
+