meta-phosphor: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I588025b614416c43aa2d053765ab53bacf890cb5
diff --git a/meta-phosphor/recipes-connectivity/avahi/avahi_%.bbappend b/meta-phosphor/recipes-connectivity/avahi/avahi_%.bbappend
index ee15899..5d0da58 100644
--- a/meta-phosphor/recipes-connectivity/avahi/avahi_%.bbappend
+++ b/meta-phosphor/recipes-connectivity/avahi/avahi_%.bbappend
@@ -1,10 +1,10 @@
-FILESEXTRAPATHS_prepend := "${THISDIR}/avahi-daemon:"
+FILESEXTRAPATHS:prepend := "${THISDIR}/avahi-daemon:"
 
 SRC_URI += "file://avahi-daemon-override.conf"
 
-FILES_avahi-daemon_append += "${systemd_system_unitdir}/avahi-daemon.service.d/avahi-daemon-override.conf"
+FILES:avahi-daemon:append += "${systemd_system_unitdir}/avahi-daemon.service.d/avahi-daemon-override.conf"
 
-do_install_append() {
+do_install:append() {
 
         install -m 644 -D ${WORKDIR}/avahi-daemon-override.conf \
         ${D}${systemd_system_unitdir}/avahi-daemon.service.d/avahi-daemon-override.conf