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-networking/recipes-support/libldb/libldb/libldb-fix-musl-libc-conflict-type-error.patch b/meta-openembedded/meta-networking/recipes-support/libldb/libldb/libldb-fix-musl-libc-conflict-type-error.patch
new file mode 100644
index 0000000..444fa3f
--- /dev/null
+++ b/meta-openembedded/meta-networking/recipes-support/libldb/libldb/libldb-fix-musl-libc-conflict-type-error.patch
@@ -0,0 +1,45 @@
+From 5bd7b5d04435bd593349825973ce32290f5f604d Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Wed, 25 Jul 2018 09:55:25 +0800
+Subject: [PATCH] libldb: fix musl libc conflicting types error
+
+/third_party/cmocka/cmocka.h:126:28: error: conflicting types for 'uintptr_t'
+            typedef unsigned int uintptr_t;
+                                 ^~~~~~~~~
+use __DEFINED_uintptr_t in alltypes.h to check if uintptr already defined
+
+Upstream-Status: Pending
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ third_party/cmocka/cmocka.h | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/third_party/cmocka/cmocka.h b/third_party/cmocka/cmocka.h
+index 4fd82a9..5443a08 100644
+--- a/third_party/cmocka/cmocka.h
++++ b/third_party/cmocka/cmocka.h
+@@ -110,7 +110,7 @@ typedef uintmax_t LargestIntegralType;
+     ((LargestIntegralType)(value))
+ 
+ /* Smallest integral type capable of holding a pointer. */
+-#if !defined(_UINTPTR_T) && !defined(_UINTPTR_T_DEFINED)
++#if !defined(__DEFINED_uintptr_t) 
+ # if defined(_WIN32)
+     /* WIN32 is an ILP32 platform */
+     typedef unsigned int uintptr_t;
+@@ -134,9 +134,8 @@ typedef uintmax_t LargestIntegralType;
+ #  endif /* __WORDSIZE */
+ # endif /* _WIN32 */
+ 
+-# define _UINTPTR_T
+-# define _UINTPTR_T_DEFINED
+-#endif /* !defined(_UINTPTR_T) || !defined(_UINTPTR_T_DEFINED) */
++# define __DEFINED_uintptr_t
++#endif /* !defined(__DEFINED_uintptr_t) 
+ 
+ /* Perform an unsigned cast to uintptr_t. */
+ #define cast_to_pointer_integral_type(value) \
+-- 
+2.7.4
+