servo/data/servo_stumpy_overlay.xml

<root>
  <control>
    <name>dev_mode</name>
    <params clobber_ok="" map="onoff"></params>
  </control>
  <control>
    <name>fw_up</name>
    <remap>rec_mode</remap>
  </control>
  <control>
    <name>power_state</name>
    <doc>Used to turn the DUT off and on</doc>
    <params cmd="set" interface="servo" drv="stumpy_power" input_type="str"/>
  </control>
</root>