iio: adc: ad7173: Add ad7173_device_info names

Add missing names from the device info struct for 3 models to ensure
consistency with the rest of the models.

Fixes: 76a1e6a4

 ("iio: adc: ad7173: add AD7173 driver")
Signed-off-by: Dumitru Ceclan <dumitru.ceclan@analog.com>
Link: https://lore.kernel.org/r/20240521-ad7173-fixes-v1-2-8161cc7f3ad1@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>