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-kernel/kexec/kexec-tools-klibc/0006-kexec-syscall.h-work-around-missing-syscall-wrapper.patch b/meta-openembedded/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/0006-kexec-syscall.h-work-around-missing-syscall-wrapper.patch
new file mode 100644
index 0000000..3020f76
--- /dev/null
+++ b/meta-openembedded/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/0006-kexec-syscall.h-work-around-missing-syscall-wrapper.patch
@@ -0,0 +1,71 @@
+From 45a80fe7d247898d83edfeabe32b9de80a50a6be Mon Sep 17 00:00:00 2001
+From: Andrea Adami <andrea.adami@gmail.com>
+Date: Fri, 31 Aug 2018 11:33:51 +0200
+Subject: [PATCH] kexec-syscall.h: work around missing syscall() wrapper
+
+Fix
+
+ kexec-syscall.h: In function 'kexec_load':
+ kexec-syscall.h:80:16: warning: implicit declaration of function 'syscall'
+
+Upstream-Status: Inappropriate [klibc specific]
+Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
+
+---
+ kexec/kexec-syscall.h | 21 +++++++++++++++++++++
+ 1 file changed, 21 insertions(+)
+
+diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
+index 33638c2..204007d 100644
+--- a/kexec/kexec-syscall.h
++++ b/kexec/kexec-syscall.h
+@@ -74,11 +74,16 @@
+ 
+ struct kexec_segment;
+ 
++#ifndef __KLIBC__
+ static inline long kexec_load(void *entry, unsigned long nr_segments,
+ 			struct kexec_segment *segments, unsigned long flags)
+ {
+ 	return (long) syscall(__NR_kexec_load, entry, nr_segments, segments, flags);
+ }
++#else
++extern long kexec_load(void *entry, unsigned long nr_segments,
++			struct kexec_segment *segments, unsigned long flags);
++#endif
+ 
+ static inline int is_kexec_file_load_implemented(void) {
+ 	if (__NR_kexec_file_load != 0xffffffff)
+@@ -86,6 +91,21 @@ static inline int is_kexec_file_load_implemented(void) {
+ 	return 0;
+ }
+ 
++#ifdef __KLIBC__
++/* Stub provided by klibc only for the following archs */
++#if defined (__x86_64__) || defined (__powerpc_64__) || defined (__s390x__)
++extern long kexec_file_load(int kernel_fd, int initrd_fd,
++			unsigned long cmdline_len, const char *cmdline_ptr,
++			unsigned long flags);
++#else
++static inline long kexec_file_load(int kernel_fd, int initrd_fd,
++			unsigned long cmdline_len, const char *cmdline_ptr,
++			unsigned long flags)
++{
++	return -1;
++}
++#endif
++#else
+ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
+ 			unsigned long cmdline_len, const char *cmdline_ptr,
+ 			unsigned long flags)
+@@ -93,6 +113,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
+ 	return (long) syscall(__NR_kexec_file_load, kernel_fd, initrd_fd,
+ 				cmdline_len, cmdline_ptr, flags);
+ }
++#endif
+ 
+ #define KEXEC_ON_CRASH		0x00000001
+ #define KEXEC_PRESERVE_CONTEXT	0x00000002
+-- 
+2.7.4
+