iio: pressure: abp060mg: make abp_config const

Add const qualifier to struct abp_config abp_config[]. This is
read-only data so it can be made const.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250628-iio-const-data-23-v1-1-542cfadce9d0@baylibre.com


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