Getting RUT240 to work

fgrep -r 'rut200' target/linux/ath79 | grep '.dts'
target/linux/ath79/dts/ar9330_rut200.dts:       model = "Teltonika rut200";
target/linux/ath79/dts/ar9330_rut200.dts:       compatible = "Teltonika,rut200", "qca,ar9330";