meta-phosphor: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I588025b614416c43aa2d053765ab53bacf890cb5
diff --git a/meta-phosphor/recipes-support/boost/boost_%.bbappend b/meta-phosphor/recipes-support/boost/boost_%.bbappend
index 5166bbb..7aaa35c 100644
--- a/meta-phosphor/recipes-support/boost/boost_%.bbappend
+++ b/meta-phosphor/recipes-support/boost/boost_%.bbappend
@@ -1,12 +1,12 @@
 #This is largely to improve our build times by not building or installing
 #modules that OpenBMC does not use by our coding standard.  Another thing to
 #note is that for most targets, coroutine and context libraries are also added
-#with a BOOST_LIBS_append_<platform> for most targets.  Chrono/Thread should not
+#with a BOOST_LIBS:append:<platform> for most targets.  Chrono/Thread should not
 #be relied directly, but are required dependencies of context and coroutine.
 #See the relevant portion of the openbmc coding standard with regards to boost
 #libraries
 #
 #https://github.com/openbmc/docs/blob/master/cpp-style-and-conventions.md#boost
 #
-BOOST_LIBS_openbmc-phosphor = "chrono thread context coroutine"
+BOOST_LIBS:openbmc-phosphor = "chrono thread context coroutine"