arm64: dts: ti: k3-am62: Make the main_conf node a simple-bus

The main_conf node does not need to be a syscon, so change to
"simple-bus". This removes a DTS check warning.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240124184722.150615-10-afd@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-am62-main.dtsi

@@ -42,9 +42,8 @@ gic_its: msi-controller@1820000 {
 		};
 	};
 
-	main_conf: syscon@100000 {
-		compatible = "syscon", "simple-mfd";
-		reg = <0x00 0x00100000 0x00 0x20000>;
+	main_conf: bus@100000 {
+		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x0 0x00 0x00100000 0x20000>;