systemd: disable getty on ttyS0 for sysmobts-2050

Fixes: SYS#235

recipes-fixes/systemd/systemd_sysmocom.inc

@@ -42,6 +42,20 @@ pkg_postinst_${PN}_append () {
         systemctl ${OPTS} mask systemd-journal-flush.service
 }
 
+pkg_postinst_${PN}_append_sysmobts-2050 () {
+        cd $D${sysconfdir}/init.d
+
+        echo "Disabling ttyS0 for sysmobts-2050:"
+
+        OPTS=""
+
+        if [ -n "$D" ]; then
+                OPTS="--root=$D"
+        fi
+
+        systemctl ${OPTS} mask serial-getty@ttyS0.service
+}
+
 do_install_append() {
         install -m 0644 ${WORKDIR}/journald.conf ${D}${sysconfdir}/systemd/