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-bsp/u-boot/u-boot-common_2018.07.inc b/poky/meta/recipes-bsp/u-boot/u-boot-common_2018.07.inc
new file mode 100644
index 0000000..22b44dc
--- /dev/null
+++ b/poky/meta/recipes-bsp/u-boot/u-boot-common_2018.07.inc
@@ -0,0 +1,18 @@
+HOMEPAGE = "http://www.denx.de/wiki/U-Boot/WebHome"
+SECTION = "bootloaders"
+DEPENDS += "flex-native bison-native"
+
+LICENSE = "GPLv2+"
+LIC_FILES_CHKSUM = "file://Licenses/README;md5=30503fd321432fc713238f582193b78e"
+PE = "1"
+
+# We use the revision in order to avoid having to fetch it from the
+# repo during parse
+SRCREV = "8c5d4fd0ec222701598a27b26ab7265d4cee45a3"
+
+SRC_URI = "git://git.denx.de/u-boot.git \
+           file://CVE-2018-1000205-1.patch \
+           file://CVE-2018-1000205-2.patch \
+"
+
+S = "${WORKDIR}/git"