ARM64: dts: meson-axg: add spdif input pins

Add spdif input pin definitions to meson AXG
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

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

@@ -561,6 +561,41 @@ mux {
 					};
 				};
 
+				spdif_in_z_pins: spdif_in_z {
+					mux {
+						groups = "spdif_in_z";
+						function = "spdif_in";
+					};
+				};
+
+				spdif_in_a1_pins: spdif_in_a1 {
+					mux {
+						groups = "spdif_in_a1";
+						function = "spdif_in";
+					};
+				};
+
+				spdif_in_a7_pins: spdif_in_a7 {
+					mux {
+						groups = "spdif_in_a7";
+						function = "spdif_in";
+					};
+				};
+
+				spdif_in_a19_pins: spdif_in_a19 {
+					mux {
+						groups = "spdif_in_a19";
+						function = "spdif_in";
+					};
+				};
+
+				spdif_in_a20_pins: spdif_in_a20 {
+					mux {
+						groups = "spdif_in_a20";
+						function = "spdif_in";
+					};
+				};
+
 				spdif_out_z_pins: spdif_out_z {
 					mux {
 						groups = "spdif_out_z";