arm64: dts: rockchip: Drop unneeded address+size-cells on px30

On nodes with compatible "rockchip,px30-usb2phy-grf", the #address-cells
and #size-cells are required and consequently their child nodes should
have unit addresses. That is not the case for the px30-pmugrf and
px30-grf nodes, so remove them there.

This fixes the following DTB validation warnings:

  unnecessary #address-cells/#size-cells without "ranges",
  "dma-ranges" or child "reg" property

Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
Link: https://lore.kernel.org/r/20250709132323.128757-10-didi.debian@cknow.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: diederikdehaas

arch/arm64/boot/dts/rockchip/px30.dtsi

@@ -351,8 +351,6 @@
 	pmugrf: syscon@ff010000 {
 		compatible = "rockchip,px30-pmugrf", "syscon", "simple-mfd";
 		reg = <0x0 0xff010000 0x0 0x1000>;
-		#address-cells = <1>;
-		#size-cells = <1>;
 
 		pmu_io_domains: io-domains {
 			compatible = "rockchip,px30-pmu-io-voltage-domain";
@@ -453,8 +451,6 @@
 	grf: syscon@ff140000 {
 		compatible = "rockchip,px30-grf", "syscon", "simple-mfd";
 		reg = <0x0 0xff140000 0x0 0x1000>;
-		#address-cells = <1>;
-		#size-cells = <1>;
 
 		io_domains: io-domains {
 			compatible = "rockchip,px30-io-voltage-domain";