message: Update HMI_API.xml
diff: <param name="deviceInfo" type="Common.DeviceInfo" mandatory="true">
  <description>The ID, serial number, transport type the named-app's-device is connected over to HU.</description>
  </param>
  + <param name="secondaryDeviceInfo" type="Common.DeviceInfo" mandatory="false">
  + <description>The ID, serial number, transport type that are acquired through Secondary Transport.</description>
  + </param>
  <param name="policyAppID" type="String" maxlength="50" minlength="1" mandatory="true">
  <description>Policy ID(=the appID the application registers with) of registered application.</description>
  </param>
  