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-raspberrypi/recipes-graphics/userland/files/0006-zero-out-wl-buffers-in-egl_surface_free.patch b/meta-raspberrypi/recipes-graphics/userland/files/0006-zero-out-wl-buffers-in-egl_surface_free.patch
new file mode 100644
index 0000000..1a5e14f
--- /dev/null
+++ b/meta-raspberrypi/recipes-graphics/userland/files/0006-zero-out-wl-buffers-in-egl_surface_free.patch
@@ -0,0 +1,33 @@
+From 466f28ce302f68ac39be750f4b55285791f43ab1 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 6 Feb 2016 11:10:47 -0800
+Subject: [PATCH 06/18] zero-out wl buffers in egl_surface_free
+
+origins from buildroot
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ interface/khronos/egl/egl_client_surface.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/interface/khronos/egl/egl_client_surface.c b/interface/khronos/egl/egl_client_surface.c
+index 42350bf..1f923d9 100644
+--- a/interface/khronos/egl/egl_client_surface.c
++++ b/interface/khronos/egl/egl_client_surface.c
+@@ -690,11 +690,13 @@ void egl_surface_free(EGL_SURFACE_T *surface)
+       if (surface->back_wl_buffer) {
+          wl_buffer_destroy(surface->back_wl_buffer->wl_buffer);
+          free(surface->back_wl_buffer);
++         surface->back_wl_buffer = 0;
+       }
+ 
+       if (surface->front_wl_buffer) {
+          wl_buffer_destroy(surface->front_wl_buffer->wl_buffer);
+          free(surface->front_wl_buffer);
++         surface->front_wl_buffer = 0;
+       }
+ #endif
+    }
+-- 
+2.19.1
+