arm64: dts: add support for S4 power domain controller

Enable power domain controller for Meson s4 SoC

Signed-off-by: Shunzhou Jiang <shunzhou.jiang@amlogic.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220401110306.3364551-1-shunzhou.jiang@amlogic.com