dt-bindings: power: rockchip: Add support for RK3528

Add the compatible string and power domains for RK3528 SoC.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250518220707.669515-2-jonas@kwiboo.se


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>