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-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb b/import-layers/meta-openembedded/meta-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb
index 4460be2..138df9f 100644
--- a/import-layers/meta-openembedded/meta-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb
+++ b/import-layers/meta-openembedded/meta-oe/recipes-support/libtinyxml/libtinyxml_2.6.2.bb
@@ -42,4 +42,4 @@
     install -m 0644 ${S}/tinyxml.h ${D}${includedir}
 }
 
-BBCLASSEXTEND += "native"
+BBCLASSEXTEND = "native"