meta-phosphor: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I588025b614416c43aa2d053765ab53bacf890cb5
diff --git a/meta-phosphor/classes/phosphor-logging-yaml-provider.bbclass b/meta-phosphor/classes/phosphor-logging-yaml-provider.bbclass
index 89d031c..f51e262 100644
--- a/meta-phosphor/classes/phosphor-logging-yaml-provider.bbclass
+++ b/meta-phosphor/classes/phosphor-logging-yaml-provider.bbclass
@@ -2,7 +2,7 @@
 
 LOGGING_YAML_SUBDIRS ??= "${OBMC_ORG_YAML_SUBDIRS}"
 
-do_install_append() {
+do_install:append() {
     for yaml_d in ${LOGGING_YAML_SUBDIRS} ;
     do
         if [ ! -d ${S}/${yaml_d} ];