arm64: dts: imx8-ss-lsio: Move lsio_bus_clk outside of soc

The lsio_bus_clk node does not have any register associated with it,
so it should be moved outside of soc to fix schema warning from
simple-bus.yaml.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8-ss-lsio.dtsi

@@ -7,6 +7,13 @@
 #include <dt-bindings/clock/imx8-lpcg.h>
 #include <dt-bindings/firmware/imx/rsrc.h>
 
+lsio_bus_clk: clock-lsio-bus {
+	compatible = "fixed-clock";
+	#clock-cells = <0>;
+	clock-frequency = <100000000>;
+	clock-output-names = "lsio_bus_clk";
+};
+
 lsio_subsys: bus@5d000000 {
 	compatible = "simple-bus";
 	#address-cells = <1>;
@@ -14,13 +21,6 @@ lsio_subsys: bus@5d000000 {
 	ranges = <0x5d000000 0x0 0x5d000000 0x1000000>,
 		 <0x08000000 0x0 0x08000000 0x10000000>;
 
-	lsio_bus_clk: clock-lsio-bus {
-		compatible = "fixed-clock";
-		#clock-cells = <0>;
-		clock-frequency = <100000000>;
-		clock-output-names = "lsio_bus_clk";
-	};
-
 	lsio_pwm0: pwm@5d000000 {
 		compatible = "fsl,imx27-pwm";
 		reg = <0x5d000000 0x10000>;