meta-phosphor: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I588025b614416c43aa2d053765ab53bacf890cb5
diff --git a/meta-phosphor/recipes-phosphor/state/phosphor-state-manager-systemd-links.inc b/meta-phosphor/recipes-phosphor/state/phosphor-state-manager-systemd-links.inc
index 92a5f4e..c692c61 100644
--- a/meta-phosphor/recipes-phosphor/state/phosphor-state-manager-systemd-links.inc
+++ b/meta-phosphor/recipes-phosphor/state/phosphor-state-manager-systemd-links.inc
@@ -1,4 +1,4 @@
-pkg_postinst_${PN}-obmc-targets_append() {
+pkg_postinst:${PN}-obmc-targets:append() {
 
     mkdir -p $D$systemd_system_unitdir/multi-user.target.requires
     LINK="$D$systemd_system_unitdir/multi-user.target.requires/obmc-host-reset@0.target"
@@ -81,7 +81,7 @@
     ln -s $TARGET $LINK
 }
 
-pkg_prerm_${PN}-obmc-targets_append() {
+pkg_prerm:${PN}-obmc-targets:append() {
 
     LINK="$D$systemd_system_unitdir/multi-user.target.requires/obmc-host-reset@0.target"
     rm $LINK