arm64: dts: rockchip: add 2 pmu_io_domain supplies for Qnap-TS433

Add the two supplies for the pmu-io-domains that are defined in the
vendor devicetree for the TS433.

Tested-by: Uwe Kleine-König <ukleinek@debian.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20240723195538.1133436-15-heiko@sntech.de