dt-bindings: iio: imu: bmi160: add bmi120

Document bosch,bmi120 compatible.

Signed-off-by: Danila Tikhonov <danila@jiaxyga.com>
Signed-off-by: Barnbás Czémán <trabarni@gmail.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240505-bmi120-v3-2-15cee3d0b2ef@gmail.com


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