[OneWire] Provide a way to correct the sensor type for DS2438 based multi-sensors

[J-N-K]

DS2438 based solutions are sold by several vendors with different sensors attaches (e.g. humidity, current, light, pressure). Most of these vendors provide a way to identify the attached sensor type (and thereby the possibility to configure the thing with the correct channels/channel-type) with an identification byte in the user-defined "pages" of the sensor.

DIY/Home-made sensors (and some commercially available sensors) do not provide such an identification. In this case the DS2438 is added as "generic", even if a better type is available. It should be possible to set that identification byte from the binding.

[J-N-K]

Fixed