ARM64: dts: meson-axg: add AO clock driver

This add the AO (Always-On part) clock DT info for Meson-AXG SoC
Signed-off-by: NQiufang Dai <qiufang.dai@amlogic.com>
Signed-off-by: NYixun Lan <yixun.lan@amlogic.com>
[khilman: cleanup subject]
Signed-off-by: NKevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-axg.dtsi

@@ -7,6 +7,7 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/axg-clkc.h>
+#include <dt-bindings/clock/axg-aoclkc.h>
 #include <dt-bindings/gpio/meson-axg-gpio.h>
 #include <dt-bindings/reset/amlogic,meson-axg-reset.h>
 
@@ -1030,6 +1031,17 @@
 			#size-cells = <2>;
 			ranges = <0x0 0x0 0x0 0xff800000 0x0 0x100000>;
 
+			sysctrl_AO: sys-ctrl@0 {
+				compatible = "amlogic,meson-axg-ao-sysctrl", "syscon", "simple-mfd";
+				reg =  <0x0 0x0 0x0 0x100>;
+
+				clkc_AO: clock-controller {
+					compatible = "amlogic,meson-axg-aoclkc";
+					#clock-cells = <1>;
+					#reset-cells = <1>;
+				};
+			};
+
 			pinctrl_aobus: pinctrl@14 {
 				compatible = "amlogic,meson-axg-aobus-pinctrl";
 				#address-cells = <2>;