Document Rockchip RK3128 SoC compatible for qos registers.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230829171647.187787-2-knaerzche@gmail.com


Signed-off-by: Lee Jones <lee@kernel.org>