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/poky/meta/recipes-devtools/gcc/gcc-8.2/0041-ARC-fix-spec-gen.patch b/poky/meta/recipes-devtools/gcc/gcc-8.2/0041-ARC-fix-spec-gen.patch
new file mode 100644
index 0000000..cbd5e41
--- /dev/null
+++ b/poky/meta/recipes-devtools/gcc/gcc-8.2/0041-ARC-fix-spec-gen.patch
@@ -0,0 +1,44 @@
+From 892142379c6b99fe8c3ebdfe0b79e2a435228c1d Mon Sep 17 00:00:00 2001
+From: claziss <claziss@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 17 Sep 2018 08:52:10 +0000
+Subject: [PATCH] [ARC] Update LINK_EH_SPEC linker spec.
+
+With no trailing space in LINK_EH_SPEC linker spec gets generated as:
+------------------------>8---------------------
+%{!r:--build-id} --eh-frame-hdr%{h*} ...
+------------------------>8---------------------
+
+or even worse if hash style is added:
+------------------------>8---------------------
+%{!r:--build-id} --eh-frame-hdr--hash-style=sysv %{h*} ...
+------------------------>8---------------------
+
+Now if that spec is really used by LD then it fails inevitably
+saying that it doesn't know option "--eh-frame-hdr--hash-style=sysv".
+
+2018-09-17  Alexey Brodkin  <abrodkin@synopsys.com>
+
+	* config/arc/linux.h (LINK_EH_SPEC): Add missing space.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@264361 138bc75d-0d04-0410-961f-82ee72b054a4
+
+Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
+
+Upstream-Status: Backport[https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=892142379c6b]
+---
+ gcc/config/arc/linux.h | 2 +-
+ 1 files changed, 1 insertions(+), 1 deletion(-)
+
+diff --git a/gcc/config/arc/linux.h b/gcc/config/arc/linux.h
+index 96d548eae341..62ebe4de0fc7 100644
+--- a/gcc/config/arc/linux.h
++++ b/gcc/config/arc/linux.h
+@@ -98,7 +98,7 @@ along with GCC; see the file COPYING3.  If not see
+    Signalize that because we have fde-glibc, we don't need all C shared libs
+    linked against -lgcc_s.  */
+ #undef LINK_EH_SPEC
+-#define LINK_EH_SPEC "--eh-frame-hdr"
++#define LINK_EH_SPEC "--eh-frame-hdr "
+ #endif
+ 
+ #undef SUBTARGET_CPP_SPEC