iio: bmi270: suspend and resume triggering on relevant pm operations

iio: bmi270: suspend and resume triggering on relevant pm operations

Prevent triggers from stop working after the device has entered sleep:
use iio_device_suspend_triggering and iio_device_resume_triggering helpers.

Closes: https://lore.kernel.org/all/31d7f7aa-e834-4fd0-a66a-e0ff528425dc@gmail.com
Signed-off-by: Denis Benato <benato.denis96@gmail.com>
Tested-by: Justin Weiss <justin@justinweiss.com>
Link: https://patch.msgid.link/20250525142530.71955-2-benato.denis96@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>