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/elfutils/files/0005-fix-a-stack-usage-warning.patch b/poky/meta/recipes-devtools/elfutils/files/0005-fix-a-stack-usage-warning.patch
index 22a01cf..e2966cb 100644
--- a/poky/meta/recipes-devtools/elfutils/files/0005-fix-a-stack-usage-warning.patch
+++ b/poky/meta/recipes-devtools/elfutils/files/0005-fix-a-stack-usage-warning.patch
@@ -1,4 +1,4 @@
-From dd6dbf6af396519380f48c0ef1ce6cf4dd77f6d7 Mon Sep 17 00:00:00 2001
+From 4d7ea681932556ad881f6841de90d0bfff56f8d7 Mon Sep 17 00:00:00 2001
 From: Hongxu Jia <hongxu.jia@windriver.com>
 Date: Tue, 15 Aug 2017 17:25:16 +0800
 Subject: [PATCH 5/7] fix a stack-usage warning
@@ -18,10 +18,10 @@
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/backends/ppc_initreg.c b/backends/ppc_initreg.c
-index 69d623b..de41dec 100644
+index 3e4432f..59c2d97 100644
 --- a/backends/ppc_initreg.c
 +++ b/backends/ppc_initreg.c
-@@ -93,7 +93,7 @@ ppc_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
+@@ -94,7 +94,7 @@ ppc_set_initial_registers_tid (pid_t tid __attribute__ ((unused)),
  	return false;
      }
    const size_t gprs = sizeof (user_regs.r.gpr) / sizeof (*user_regs.r.gpr);
@@ -31,5 +31,5 @@
      dwarf_regs[gpr] = user_regs.r.gpr[gpr];
    if (! setfunc (0, gprs, dwarf_regs, arg))
 -- 
-1.8.3.1
+2.7.4