busybox: Make syslog service stop later

It will avoid some applications log to come to the console when
stopping the system
BugzID: 55006

recipes-core/busybox/busybox/busybox-syslog.service.in

@@ -0,0 +1,18 @@
+[Unit]
+Description=System Logging Service
+Wants=busybox-klogd.service
+
+Conflicts=shutdown.target
+Before=shutdown.target
+
+[Service]
+EnvironmentFile=-/etc/default/busybox-syslog
+ExecStart=@base_sbindir@/syslogd -n $OPTIONS
+Sockets=syslog.socket
+
+
+[Install]
+WantedBy=multi-user.target
+Also=busybox-klogd.service
+Alias=syslog.service
+