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-extended/tzdata/tzdata_2018f.bb b/poky/meta/recipes-extended/tzdata/tzdata_2018g.bb
similarity index 97%
rename from poky/meta/recipes-extended/tzdata/tzdata_2018f.bb
rename to poky/meta/recipes-extended/tzdata/tzdata_2018g.bb
index b167540..dba82ac 100644
--- a/poky/meta/recipes-extended/tzdata/tzdata_2018f.bb
+++ b/poky/meta/recipes-extended/tzdata/tzdata_2018g.bb
@@ -9,8 +9,8 @@
 SRC_URI = "http://www.iana.org/time-zones/repository/releases/tzdata${PV}.tar.gz;name=tzdata"
 UPSTREAM_CHECK_URI = "http://www.iana.org/time-zones"
 
-SRC_URI[tzdata.md5sum] = "e5e84f00f9d18bd6ebc8b1affec91b15"
-SRC_URI[tzdata.sha256sum] = "0af6a85fc4ea95832f76524f35696a61abb3992fd3f8db33e5a1f95653e043f2"
+SRC_URI[tzdata.md5sum] = "e71cb1f9d8d53c43904d79d7aeeedc1b"
+SRC_URI[tzdata.sha256sum] = "02dfde534872f6513ae4553a3388fdae579441e31b862ea99170dfc447f46a16"
 
 inherit allarch