Yocto 2.3

Move OpenBMC to Yocto 2.3(pyro).

Tested: Built and verified Witherspoon and Palmetto images
Change-Id: I50744030e771f4850afc2a93a10d3507e76d36bc
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Resolves: openbmc/openbmc#2461
diff --git a/import-layers/meta-openembedded/meta-networking/recipes-filter/libnetfilter/libnetfilter-cthelper_1.0.0.bb b/import-layers/meta-openembedded/meta-networking/recipes-filter/libnetfilter/libnetfilter-cthelper_1.0.0.bb
index 3d37997..92cb23d 100644
--- a/import-layers/meta-openembedded/meta-networking/recipes-filter/libnetfilter/libnetfilter-cthelper_1.0.0.bb
+++ b/import-layers/meta-openembedded/meta-networking/recipes-filter/libnetfilter/libnetfilter-cthelper_1.0.0.bb
@@ -6,7 +6,9 @@
 LIC_FILES_CHKSUM = "file://COPYING;md5=8ca43cbc842c2336e835926c2166c28b"
 DEPENDS = "libmnl"
 
-SRC_URI = "http://www.netfilter.org/projects/libnetfilter_cthelper/files/libnetfilter_cthelper-${PV}.tar.bz2;name=tar"
+SRC_URI = "http://www.netfilter.org/projects/libnetfilter_cthelper/files/libnetfilter_cthelper-${PV}.tar.bz2;name=tar \
+           file://libnetfilter-cthelper-visibility-hidden.patch \
+"
 SRC_URI[tar.md5sum] = "b2efab1a3a198a5add448960ba011acd"
 SRC_URI[tar.sha256sum] = "07618e71c4d9a6b6b3dc1986540486ee310a9838ba754926c7d14a17d8fccf3d"