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/x86_vfscanf.patch b/meta-openembedded/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/x86_vfscanf.patch
new file mode 100644
index 0000000..2f0ad2e
--- /dev/null
+++ b/meta-openembedded/meta-initramfs/recipes-kernel/kexec/kexec-tools-klibc/x86_vfscanf.patch
@@ -0,0 +1,43 @@
+From 423c3f6f41fe04f4512e2a97a130f072d53dd4cf Mon Sep 17 00:00:00 2001
+From: OpenEmbedded <oe.patch@oe>
+Date: Wed, 11 Apr 2018 22:51:05 +0200
+Subject: [PATCH] x86-linux-setup.c: replace vfscanf() with vsscanf()
+
+klibc lacks vfscanf()
+
+Upstream-Status: Inappropriate [klibc specific]
+Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
+
+---
+ kexec/arch/i386/x86-linux-setup.c | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/kexec/arch/i386/x86-linux-setup.c b/kexec/arch/i386/x86-linux-setup.c
+index 7850083..e190356 100644
+--- a/kexec/arch/i386/x86-linux-setup.c
++++ b/kexec/arch/i386/x86-linux-setup.c
+@@ -200,6 +200,8 @@ static int file_scanf(const char *dir, const char *file, const char *scanf_line,
+ 	FILE *fp;
+ 	int retno;
+ 	char filename[PATH_MAX];
++	long line_size = MAX_LINE;
++	char *line;
+ 
+ 	snprintf(filename, PATH_MAX, "%s/%s", dir, file);
+ 	filename[PATH_MAX-1] = 0;
+@@ -210,7 +212,14 @@ static int file_scanf(const char *dir, const char *file, const char *scanf_line,
+ 	}
+ 
+ 	va_start(argptr, scanf_line);
+-	retno = vfscanf(fp, scanf_line, argptr);
++
++	line = xmalloc(sizeof(line) * line_size);
++	while(fgets(line, sizeof(line), fp) != NULL ) {
++		line_size += MAX_LINE;
++		line = xrealloc(line,line_size);
++	}
++	retno = vsscanf(line, scanf_line, argptr);
++
+ 	va_end(argptr);
+ 
+ 	fclose(fp);