This fixes commit c1a1f4ff20 ("pwm: Move
scaling factor from sensors prog to library") which didn't account for
return type of `get_type_scaling()` being `int` rather than `double` or
`float`, so the scaling was done by a factor of 2 instead of 2.55, thus
making the result off by quite a lot.
ms: adjust test
xaizek
62a9553191