Device Driver for TMP006 Sensor

This PR add support for TI TMP006 Infrared Thermopile Sensor.
As in the mpl3115A2 PR, we wanted to avoid the use of floating point in the prinf output. So the printed value 2500 stands for 25°C, which should be more comfortable ;).
About the calibration thing: There are two temperatures, the IR target temperature and the die temperature. The IR target temperature needs calibration, the die temperature doesn´t.