iio: ABI: add missing calibscale attributes

This adds additional calibscale attributes to the ABI documentation for
instances found in drivers by searching the code for:

    BIT(IIO_CHAN_INFO_CALIBSCALE)

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240815-iio-abi-calib-audit-v1-3-536b2fea8620@baylibre.com


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>