Add busybox configuration for stm32mp machine

Signed-off-by: Christophe Priouzeau <christophe.priouzeau@st.com>

recipes-core/busybox/busybox_%.bbappend

@@ -0,0 +1,33 @@
+FILESEXTRAPATHS_prepend_stm32mpcommon := "${THISDIR}/${PN}:"
+
+SRC_URI_append_stm32mpcommon = " \
+       file://${BUSYBOX_CONFIG_FRAGMENT} \
+       file://0001-miscutils-watchdog-Add-gettimeleft.patch \
+       file://ifplugd.conf \
+       file://ifplugd.action \
+       file://ifplugd.sh \
+       "
+
+BUSYBOX_CONFIG_FRAGMENT_stm32mpcommon = "busybox-stm32mp.cfg"
+
+#inherit update-rc.d
+DEPENDS_append_stm32mpcommon = " ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '', 'update-rc.d-native', d)}"
+
+do_configure_append_stm32mpcommon () {
+    # merge specific configuration to newly generated .config
+    merge_config.sh -m -r -O ${B} ${B}/.config ${WORKDIR}/${BUSYBOX_CONFIG_FRAGMENT} 1>&2
+    # make sure to generate proper config file for busybox
+    cml1_do_configure
+}
+
+do_install_append_stm32mpcommon () {
+    if [ "${@bb.utils.contains('DISTRO_FEATURES', 'systemd', '1', '0', d)}" = "0" ]; then
+        if grep -q "CONFIG_IFPLUGD=y" ${B}/.config; then
+            install -d ${D}${sysconfdir}/ifplugd
+            install -m 755 ${WORKDIR}/ifplugd.sh ${D}${sysconfdir}/init.d/ifplugd.sh
+            update-rc.d -r ${D} ifplugd.sh start 99 2 3 4 5 .
+            install -m 755 ${WORKDIR}/ifplugd.conf ${D}${sysconfdir}/ifplugd/ifplugd.conf
+            install -m 755 ${WORKDIR}/ifplugd.action ${D}${sysconfdir}/ifplugd/ifplugd.action
+        fi
+    fi
+}