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/0018-Add-EGL_IMG_context_priority-related-defines.patch b/meta-raspberrypi/recipes-graphics/userland/files/0018-Add-EGL_IMG_context_priority-related-defines.patch
new file mode 100644
index 0000000..f4d865e
--- /dev/null
+++ b/meta-raspberrypi/recipes-graphics/userland/files/0018-Add-EGL_IMG_context_priority-related-defines.patch
@@ -0,0 +1,35 @@
+From 9cfea4761ba68776fd9bfac671b74c7174f99029 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 15 Jul 2018 00:48:38 -0700
+Subject: [PATCH 18/18] Add EGL_IMG_context_priority related defines
+
+These defines are needed for compiling weston 4.x
+taken from Khronos headers
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ interface/khronos/include/EGL/eglext.h | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/interface/khronos/include/EGL/eglext.h b/interface/khronos/include/EGL/eglext.h
+index dcc90ce..6842bf9 100755
+--- a/interface/khronos/include/EGL/eglext.h
++++ b/interface/khronos/include/EGL/eglext.h
+@@ -93,6 +93,14 @@ typedef EGLImageKHR (EGLAPIENTRYP PFNEGLCREATEIMAGEKHRPROC) (EGLDisplay dpy, EGL
+ typedef EGLBoolean (EGLAPIENTRYP PFNEGLDESTROYIMAGEKHRPROC) (EGLDisplay dpy, EGLImageKHR image);
+ #endif
+ 
++#ifndef EGL_IMG_context_priority
++#define EGL_IMG_context_priority 1
++#define EGL_CONTEXT_PRIORITY_LEVEL_IMG		0x3102
++#define EGL_CONTEXT_PRIORITY_HIGH_IMG		0x3101
++#define EGL_CONTEXT_PRIORITY_MEDIUM_IMG		0x3102
++#define EGL_CONTEXT_PRIORITY_LOW_IMG		0x3103
++#endif /* EGL_IMG_context_priority */
++
+ #ifndef EGL_KHR_vg_parent_image
+ #define EGL_KHR_vg_parent_image 1
+ #define EGL_VG_PARENT_IMAGE_KHR			0x30BA	/* eglCreateImageKHR target */
+-- 
+2.19.1
+