dt-bindings: iio: accel: bma180/bma255: Move bma254 to bma255 schema

dt-bindings: iio: accel: bma180/bma255: Move bma254 to bma255 schema

BMA254 is very similar to BMA253/BMA255 which are both supported by
the bmc150-accel driver. In general, there is quite some overlap between
the bma180 and bmc150-accel driver, but the bmc150-accel driver has a few
more features (e.g. motion trigger/interrupt).

Let's move bma254 over to the bma255 schema (bmc150-accel driver).

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210611080903.14384-10-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>