arm64: dts: rockchip: add PMIC to rk3588-evb1

This adds PMIC support for the RK3588 EVB.
Co-developed-by: shengfei Xu <xsf@rock-chips.com>
Signed-off-by: shengfei Xu <xsf@rock-chips.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230526172255.68236-1-sebastian.reichel@collabora.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>