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/drm/libdrm/musl-ioctl.patch b/poky/meta/recipes-graphics/drm/libdrm/musl-ioctl.patch
new file mode 100644
index 0000000..e3d6c5b
--- /dev/null
+++ b/poky/meta/recipes-graphics/drm/libdrm/musl-ioctl.patch
@@ -0,0 +1,35 @@
+Upstream-Status: Submitted
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From 46c0fd6c827a8cb4d04e067bf04fab579ac4712e Mon Sep 17 00:00:00 2001
+From: Ross Burton <ross.burton@intel.com>
+Date: Mon, 18 Jun 2018 15:07:03 +0100
+Subject: [PATCH] tests/nouveau/threaded: adapt ioctl signature
+
+POSIX says ioctl() has the signature (int, int, ...) but glibc has decided to
+use (int, unsigned long int, ...) instead.
+
+Use a #ifdef to adapt the replacement function as appropriate.
+---
+ tests/nouveau/threaded.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/tests/nouveau/threaded.c b/tests/nouveau/threaded.c
+index 3669bcd3..e1c27c01 100644
+--- a/tests/nouveau/threaded.c
++++ b/tests/nouveau/threaded.c
+@@ -36,7 +36,11 @@ static int failed;
+ 
+ static int import_fd;
+ 
++#ifdef __GLIBC__
+ int ioctl(int fd, unsigned long request, ...)
++#else
++int ioctl(int fd, int request, ...)
++#endif
+ {
+ 	va_list va;
+ 	int ret;
+-- 
+2.11.0
+