iio: chemical: atlas-ezo-sensor: Simplify probe()

Simplify the probe() by replacing device_get_match_data() and ID lookup
match by i2c_get_match_data() as we have similar I2C and DT-based matching
table.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230818183128.334233-1-biju.das.jz@bp.renesas.com


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