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-openembedded/meta-initramfs/recipes-devtools/klibc/klibc-2.0.4/0001-klibc-Kbuild-Accept-EXTRA_KLIBCAFLAGS.patch b/meta-openembedded/meta-initramfs/recipes-devtools/klibc/klibc-2.0.4/0001-klibc-Kbuild-Accept-EXTRA_KLIBCAFLAGS.patch
new file mode 100644
index 0000000..94818e3
--- /dev/null
+++ b/meta-openembedded/meta-initramfs/recipes-devtools/klibc/klibc-2.0.4/0001-klibc-Kbuild-Accept-EXTRA_KLIBCAFLAGS.patch
@@ -0,0 +1,28 @@
+From cdc6edc2cfcd0ce88d6e66654d605dad303b1a75 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 11 Sep 2018 17:03:36 -0700
+Subject: [PATCH] klibc/Kbuild: Accept EXTRA_KLIBCAFLAGS
+
+For passing additional assembler flags
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ usr/klibc/Kbuild | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/usr/klibc/Kbuild b/usr/klibc/Kbuild
+index 98caf2e9..b34521e0 100644
+--- a/usr/klibc/Kbuild
++++ b/usr/klibc/Kbuild
+@@ -168,7 +168,8 @@ $(SOHASH): $(SOLIB) $(SOLIB).hash
+ targets += interp.o
+ 
+ quiet_cmd_interp = BUILD   $@
+-      cmd_interp = $(KLIBCCC) $(klibccflags) -D__ASSEMBLY__     \
++      cmd_interp = $(KLIBCCC) $(klibccflags) $(EXTRA_KLIBCAFLAGS) \
++                             -D__ASSEMBLY__     \
+                              -DLIBDIR=\"$(SHLIBDIR)\"         \
+ 			     -DSOHASH=\"$(SOLIBHASH)\" \
+ 			     -c -o $@ $<