message: Include some IMU timestamp offset for HDK 1.2 since performance upgrade not available there.
diff: "imu": {
  "useOrientation": true,
  - "orientationMicrosecondsOffset": 0,
  + "orientationMicrosecondsOffset": -5000,
  "useAngularVelocity": true,
  - "angularVelocityMicrosecondsOffset": 0
  + "angularVelocityMicrosecondsOffset": -15000
  }
  }
  }
  