[PATCH v10 4/5] PM / devfreq: rockchip: add devfreq driver for rk3399 dmc

base on dfi result, we do ddr frequency scaling, register dmc driver to devfreq framework, and use simple-ondemand policy. Signed-off-by: Lin Huang Signed-off-by: MyngJoo Ham Reviewed-by: Chanwoo Choi --- Changes in v10: -

[PATCH v10 4/5] PM / devfreq: rockchip: add devfreq driver for rk3399 dmc

base on dfi result, we do ddr frequency scaling, register dmc driver to devfreq framework, and use simple-ondemand policy. Signed-off-by: Lin Huang Signed-off-by: MyngJoo Ham Reviewed-by: Chanwoo Choi --- Changes in v10: - None Changes in v9: - None Changes in v8: - None Changes in v8: - do