arm64: dts: imx8mn-beacon: Migrate sound card to simple-audio-card

Instead of using a custom glue layer connecting the wm8962 CODEC
to the SAI3 sound-dai, migrate the sound card to simple-audio-card.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi

@@ -74,18 +74,30 @@ reg_usb_otg_vbus: regulator-usb {
 		enable-active-high;
 	};
 
-	sound {
-		compatible = "fsl,imx-audio-wm8962";
-		model = "wm8962-audio";
-		audio-cpu = <&sai3>;
-		audio-codec = <&wm8962>;
-		audio-routing =
-			"Headphone Jack", "HPOUTL",
-			"Headphone Jack", "HPOUTR",
-			"Ext Spk", "SPKOUTL",
-			"Ext Spk", "SPKOUTR",
-			"AMIC", "MICBIAS",
-			"IN3R", "AMIC";
+	sound-wm8962 {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "wm8962";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,widgets = "Headphone", "Headphones",
+					    "Microphone", "Headset Mic",
+					    "Speaker", "Speaker";
+		simple-audio-card,routing = "Headphones", "HPOUTL",
+					    "Headphones", "HPOUTR",
+					    "Speaker", "SPKOUTL",
+					    "Speaker", "SPKOUTR",
+					    "Headset Mic", "MICBIAS",
+					    "IN3R", "Headset Mic";
+
+		simple-audio-card,cpu {
+			sound-dai = <&sai3>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&wm8962>;
+			clocks = <&clk IMX8MN_CLK_SAI3_ROOT>;
+			frame-master;
+			bitclock-master;
+		};
 	};
 };
 
@@ -183,6 +195,7 @@ wm8962: audio-codec@1a {
 			0x0000 /* 4:FN_DMICCDAT */
 			0x0000 /* 5:Default */
 		>;
+		#sound-dai-cells = <0>;
 	};
 };