iio: imu: bmi270: add support for data ready interrupt trigger

iio: imu: bmi270: add support for data ready interrupt trigger

The BMI270 sensor provides two interrupt pins that can be used for
different interrupt sources, including a data ready signal. Add support
for configuring one the pins as a trigger source.

The interrupt pin can be configured with various options: active high or
low, push-pull or open-drain, and latched or non-latched.

Acked-by: Alex Lanzano <lanzano.alex@gmail.com>
Signed-off-by: Gustavo Silva <gustavograzs@gmail.com>
Link: https://patch.msgid.link/20250228-bmi270-irq-v2-3-3f97a4e8f551@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>