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-core/systemd/systemd/0011-src-basic-missing.h-check-for-missing-__compar_fn_t-.patch b/poky/meta/recipes-core/systemd/systemd/0011-src-basic-missing.h-check-for-missing-__compar_fn_t-.patch
new file mode 100644
index 0000000..1a22ffd
--- /dev/null
+++ b/poky/meta/recipes-core/systemd/systemd/0011-src-basic-missing.h-check-for-missing-__compar_fn_t-.patch
@@ -0,0 +1,48 @@
+From 045f205fd21e5e380edf813de04fcfbf5a487219 Mon Sep 17 00:00:00 2001
+From: Chen Qi <Qi.Chen@windriver.com>
+Date: Mon, 2 Jul 2018 13:28:25 +0800
+Subject: [PATCH 11/19] src/basic/missing.h: check for missing __compar_fn_t
+ typedef
+
+include missing.h for missing __compar_fn_t
+
+Upstream-Status: Inappropriate [musl specific]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
+---
+ src/basic/missing.h | 5 +++++
+ src/basic/strbuf.c  | 1 +
+ 2 files changed, 6 insertions(+)
+
+diff --git a/src/basic/missing.h b/src/basic/missing.h
+index 6dc750eba..cd1cc109f 100644
+--- a/src/basic/missing.h
++++ b/src/basic/missing.h
+@@ -1179,6 +1179,11 @@ struct input_mask {
+ #define RENAME_NOREPLACE (1 << 0)
+ #endif
+ 
++#ifndef __COMPAR_FN_T
++#define __COMPAR_FN_T
++typedef int (*__compar_fn_t)(const void *, const void *);
++#endif
++
+ #ifndef KCMP_FILE
+ #define KCMP_FILE 0
+ #endif
+diff --git a/src/basic/strbuf.c b/src/basic/strbuf.c
+index e2ed776a0..4d3ebec4c 100644
+--- a/src/basic/strbuf.c
++++ b/src/basic/strbuf.c
+@@ -7,6 +7,7 @@
+ #include "alloc-util.h"
+ #include "strbuf.h"
+ #include "util.h"
++#include "missing.h"
+ 
+ /*
+  * Strbuf stores given strings in a single continuous allocated memory
+-- 
+2.11.0
+