iio: adc: ad7124: Fix typo in device name

This patch fixes the device name typo.

Fixes: 951ad470 ("iio: adc: ad7124: move chip ID & name on the chip_info table")
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200902134222.28357-1-mircea.caprioru@analog.com


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