gnome-panel: append pkg_postinst only on PN

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-gnome/recipes-gnome/gnome-panel/gnome-panel3_3.0.2.bb

@@ -31,7 +31,7 @@ do_configure_prepend() {
 	sed -i -e s:help:: ${S}/Makefile.am
 }
 
-pkg_postinst_append () {
+pkg_postinst_${PN}_append () {
 	gconftool-2 --config-source=xml:readwrite:/etc/gconf/gconf.xml.defaults \
 		--direct --load /etc/gconf/schemas/panel-default-setup.entries
 }

meta-gnome/recipes-gnome/gnome-panel/gnome-panel_2.32.1.bb

@@ -26,7 +26,7 @@ do_configure_prepend() {
 	sed -i -e s:^#!@PYTHON@:#!/usr/bin/python: ${S}/gnome-panel/gnome-panel-add.in
 }
 
-pkg_postinst_append () {
+pkg_postinst_${PN}_append () {
 if [ -n "$D" ]; then
 	exit 1
 fi