iio: accel: bmc150: Set label based on accel-location for ACPI DUAL250E fwnodes

Some Yoga laptops with 1 accelerometer in the display and 1 in the base,
use an ACPI HID of DUAL250E instead of BOSC0200.

Set the iio-device's label for DUAL250E devices to a value indicating which
sensor is which, mirroring how we do this for BOSC0200 dual sensor devices.

Note the DUAL250E fwnode unfortunately does not include a mount-matrix.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-10-hdegoede@redhat.com


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