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-initramfs/recipes-kernel/kexec/kexec-tools-klibc/x86_kexec_test.patch b/meta-openembedded/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/x86_kexec_test.patch
new file mode 100644
index 0000000..1c471f5
--- /dev/null
+++ b/meta-openembedded/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/x86_kexec_test.patch
@@ -0,0 +1,30 @@
+From 9de68ec5af8db2eff352f12da28145fe5e96244d Mon Sep 17 00:00:00 2001
+From: OpenEmbedded <oe.patch@oe>
+Date: Wed, 11 Apr 2018 22:51:05 +0200
+Subject: [PATCH] do not build test
+
+The purpose of this recipe is to build the smallest
+binaries. kexek klibc-static for armv5 is around 86 KiB
+
+Upstream-Status: Inappropriate [embedded specific]
+Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
+
+---
+ Makefile.in | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile.in b/Makefile.in
+index fb01134..440730d 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -173,8 +173,8 @@ PSRCS:=$(foreach s, $(SRCS), $(PACKAGE_NAME)-$(PACKAGE_VERSION)/$(s))
+ PGSRCS:=$(foreach s, $(GENERATED_SRCS), $(PACKAGE_NAME)-$(PACKAGE_VERSION)/$(s))
+ 
+ MAN_PAGES:=$(KEXEC_MANPAGE) $(VMCORE_DMESG_MANPAGE)
+-BINARIES_i386:=$(KEXEC_TEST)
+-BINARIES_x86_64:=$(KEXEC_TEST)
++#BINARIES_i386:=$(KEXEC_TEST)
++#BINARIES_x86_64:=$(KEXEC_TEST)
+ BINARIES:=$(KEXEC) $(VMCORE_DMESG) $(BINARIES_$(ARCH))
+ 
+ UNINSTALL_KDUMP = $(sbindir)/kdump