dt-bindings: iio: gyroscope: invensense,itg3200: add binding

There is no txt file for it, add yaml for invensense,itg3200 gyroscope
given existing driver and use in DTS.

Signed-off-by: Rodrigo Gobbi <rodrigo.gobbi.7@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250527210308.4693-1-rodrigo.gobbi.7@gmail.com


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