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-graphics/piglit/piglit_git.bb b/poky/meta/recipes-graphics/piglit/piglit_git.bb
index b936ad8..9e45751 100644
--- a/poky/meta/recipes-graphics/piglit/piglit_git.bb
+++ b/poky/meta/recipes-graphics/piglit/piglit_git.bb
@@ -5,11 +5,12 @@
 SRC_URI = "git://anongit.freedesktop.org/piglit \
            file://0001-cmake-install-bash-completions-in-the-right-place.patch \
            file://0001-tests-Use-FE_UPWARD-only-if-its-defined-in-fenv.h.patch \
+           file://0001-cmake-use-proper-WAYLAND_INCLUDE_DIRS-variable.patch \
            "
 UPSTREAM_CHECK_COMMITS = "1"
 
-# From 2018-02-26
-SRCREV = "4ce0887e2f7f848d2be2e435a2d0f3c80e44ea3b"
+# From 2018-08-13
+SRCREV = "57859e15dc8ba4034348b04d0b72f213b74d6347"
 # (when PV goes above 1.0 remove the trailing r)
 PV = "1.0+gitr${SRCPV}"
 
@@ -17,7 +18,7 @@
 
 DEPENDS = "libpng virtual/libx11 libxkbcommon libxrender waffle virtual/libgl libglu python3-mako-native python3-numpy-native python3-six-native virtual/egl"
 
-inherit cmake python3native distro_features_check bash-completion
+inherit cmake pkgconfig python3native distro_features_check bash-completion
 # depends on virtual/libx11
 REQUIRED_DISTRO_FEATURES = "x11"