ARM: dts: rockchip: add io-domains nodes to rv1108.dtsi

The compatible strings below were added to
rockchip-io-domain.txt, but never added to the device tree,
so add io-domains nodes to rv1108.dtsi

"rockchip,rv1108-io-voltage-domain"
"rockchip,rv1108-pmu-io-voltage-domain"

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/20210625111746.6269-4-jbx6244@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: Johan Jonker

arch/arm/boot/dts/rv1108.dtsi

@@ -265,6 +265,11 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 
+		io_domains: io-domains {
+			compatible = "rockchip,rv1108-io-voltage-domain";
+			status = "disabled";
+		};
+
 		u2phy: usb2phy@100 {
 			compatible = "rockchip,rv1108-usb2phy";
 			reg = <0x100 0x0c>;
@@ -434,8 +439,13 @@
 	};
 
 	pmugrf: syscon@20060000 {
-		compatible = "rockchip,rv1108-pmugrf", "syscon";
+		compatible = "rockchip,rv1108-pmugrf", "syscon", "simple-mfd";
 		reg = <0x20060000 0x1000>;
+
+		pmu_io_domains: io-domains {
+			compatible = "rockchip,rv1108-pmu-io-voltage-domain";
+			status = "disabled";
+		};
 	};
 
 	usbgrf: syscon@202a0000 {