arm64: dts: ti: k3-am65-main: Correct main NAVSS representation

NAVSS is a subsystem containing different IPs, it is not really a bus.
Change the compatible from "simple-bus" to "simple-mfd" to reflect that.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm64/boot/dts/ti/k3-am65-main.dtsi

@@ -385,8 +385,8 @@ intr_main_gpio: interrupt-controller0 {
 		ti,sci-rm-range-girq = <0x1>;
 	};
 
-	cbass_main_navss: interconnect0 {
-		compatible = "simple-bus";
+	main_navss {
+		compatible = "simple-mfd";
 		#address-cells = <2>;
 		#size-cells = <2>;
 		ranges;