dt-bindings: iio: imu: mpu6050: Add icm20600 bindings to mpu6050

ICM-20600 is almost same as ICM-20602 which already support in mpu6050
driver. Specify "invensense,icm20602" as a fallback compatible

Signed-off-by: Hermes Zhang <chenhuiz@axis.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://lore.kernel.org/r/20230505054853.2155326-2-chenhuiz@axis.com


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