add ch343 driver

hc

2023-07-06 0d92c6001e626cf3cfa86b826ccc10a16115901e

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What:        /sys/bus/iio/devices/iio:deviceX/in_concentration_VOC_short_raw
Date:        September 2015
KernelVersion:    4.3
Contact:    Matt Ranostay <matt.ranostay@konsulko.com>
Description:
        Get the raw calibration VOC value from the sensor.
        This value has little application outside of calibration.