These are required to support DDR DVFS on RK3399 platforms.

Change since Daniel's posting: reordered by unit address, per existing
style
Signed-off-by: NLin Huang <hl@rock-chips.com>
Signed-off-by: NEnric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: NGaël PORTAY <gael.portay@collabora.com>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: NBrian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20220308110825.v4.11.Ie97993621975c5463d7928a8646f3737c9f2921d@changeidSigned-off-by: NHeiko Stuebner <heiko@sntech.de>