iio: common: st_sensors: check odr address value in st_sensors_set_odr()

Do not try to configure sample frequency if the sensor do not export
odr register address in register map. That change will be used to
properly support LIS3DHH accel sensor.

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Lorenzo Bianconi 2017-09-17 18:17:10 +02:00 • committed by Jonathan Cameron
commit 7d24517267