wsen-hids: Add two-point temperature calibration methods.

[nedseb]

Context

Part of the temperature calibration harmonization (#103).

The WSEN-HIDS has factory calibration (two-point linear interpolation from calibration registers). The ~6°C discrepancy previously observed was caused by a bug (missing AUTO_INCREMENT bit, fixed in #109). With the fix, the sensor reads correctly (~31°C, matching HTS221).

A two-point software calibration mechanism is needed for per-board fine-tuning, consistent with the harmonized interface defined in #103.

TODO

• Add self._temp_gain = 1.0 and self._temp_offset = 0.0 in __init__
• Add set_temp_offset(self, offset_c) method (simple offset, gain=1.0)
• Add calibrate_temperature(self, ref_low, measured_low, ref_high, measured_high) method
• Apply calibration in _convert_temperature(): return self._temp_gain * computed + self._temp_offset
• Update mock test scenario if needed

Related

• drivers: Harmonize two-point temperature calibration across all sensors. #103 — Parent: harmonize temperature calibration
• wsen-hids: Fix missing AUTO_INCREMENT bit in multi-byte register reads. #109 — AUTO_INCREMENT bug fix (resolved the 6°C discrepancy)
• PR lis2mdl: Add temperature offset correction with calibration method. #98 — LIS2MDL temperature offset (reference pattern, to be updated with two-point)

[semantic-release-updater]

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