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-oe/recipes-extended/redis/redis/hiredis-use-default-CC-if-it-is-set.patch b/meta-openembedded/meta-oe/recipes-extended/redis/redis/hiredis-use-default-CC-if-it-is-set.patch
index f9f1c0d..421f306 100644
--- a/meta-openembedded/meta-oe/recipes-extended/redis/redis/hiredis-use-default-CC-if-it-is-set.patch
+++ b/meta-openembedded/meta-oe/recipes-extended/redis/redis/hiredis-use-default-CC-if-it-is-set.patch
@@ -8,23 +8,23 @@
 
 Signed-off-by: Venture Research <tech@ventureresearch.com>
 
-Update to work with 3.0.x
-Signed-off-by: Armin Kuster <akuster808@gmail.com>
+Update to work with 4.0.8
+Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
 
 ---
  deps/hiredis/Makefile | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
-Index: deps/hiredis/Makefile
-===================================================================
+diff --git a/deps/hiredis/Makefile b/deps/hiredis/Makefile
+index 9a4de836..271c06ba 100644
 --- a/deps/hiredis/Makefile
 +++ b/deps/hiredis/Makefile
-@@ -24,7 +24,7 @@ endef
+@@ -36,7 +36,7 @@ endef
  export REDIS_TEST_CONFIG
  
  # Fallback to gcc when $CC is not in $PATH.
 -CC:=$(shell sh -c 'type $(CC) >/dev/null 2>/dev/null && echo $(CC) || echo gcc')
 +CC?=$(shell sh -c 'type $(CC) >/dev/null 2>/dev/null && echo $(CC) || echo gcc')
+ CXX:=$(shell sh -c 'type $(CXX) >/dev/null 2>/dev/null && echo $(CXX) || echo g++')
  OPTIMIZATION?=-O3
  WARNINGS=-Wall -W -Wstrict-prototypes -Wwrite-strings
- DEBUG?= -g -ggdb