arm64: dts: meson-axg: add audio arb reset controller

Add the audio memory arbiter which control the access of the audio
fifos to the DDR.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

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

@@ -189,6 +189,13 @@
 
 				resets = <&reset RESET_AUDIO>;
 			};
+
+			arb: reset-controller@280 {
+				compatible = "amlogic,meson-axg-audio-arb";
+				reg = <0x0 0x280 0x0 0x4>;
+				#reset-cells = <1>;
+				clocks = <&clkc_audio AUD_CLKID_DDR_ARB>;
+			};
 		};
 
 		cbus: bus@ffd00000 {