ARM64: dts: meson-axg: add sec_AO system controller

add the secure AO system controller with chipid enabled
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

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

@@ -745,6 +745,12 @@ mux {
 				};
 			};
 
+			sec_AO: ao-secure@140 {
+				compatible = "amlogic,meson-gx-ao-secure", "syscon";
+				reg = <0x0 0x140 0x0 0x140>;
+				amlogic,has-chip-id;
+			};
+
 			pwm_AO_ab: pwm@7000 {
 				compatible = "amlogic,meson-axg-ao-pwm";
 				reg = <0x0 0x07000 0x0 0x20>;