arm: include: rockchip: Add rk3399 pmu file

Add pmu header file for rk3399 SoC, this will help
to configure pmu in sdram driver.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
1 file changed