dt-bindings: iio: st-sensors: Add LSM303D accelerometer+magnetometer

Same as the lsm9ds0, except that the lsm303d doesn't
feature a gyroscope.

Signed-off-by: Marius Hoch <mail@mariushoch.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Hans de Goede <hansg@kernel.org>
Link: https://lore.kernel.org/r/20230415231130.115094-7-mail@mariushoch.de


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