Revert "Adds support for HDMI audio"

b/161293823

This reverts commit 72de9177fe380bda3bb11eea1aa08a243a55d154.

Reason for revert: This CL, while adding a new feature, causes regression in audio functionality. HDMI audio should be added eventually but should be done more carefully.

Change-Id: I175af0dd0a70bf1e8dba6606904489dff6067057

arch/arm64/boot/dts/freescale/fsl-imx8mq-phanbell.dts

diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8mq-phanbell.dts b/arch/arm64/boot/dts/freescale/fsl-imx8mq-phanbell.dts
index 6c05551..e67ac41 100644
--- a/arch/arm64/boot/dts/freescale/fsl-imx8mq-phanbell.dts
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8mq-phanbell.dts
@@ -53,22 +53,6 @@
 		status = "okay";
 	};
 
-	sound-hdmi {
-		compatible = "fsl,imx8mq-evk-cdnhdmi",
-				"fsl,imx-audio-cdnhdmi";
-		model = "imx-audio-hdmi";
-		audio-cpu = <&sai4>;
-		protocol = <1>;
-		hdmi-out;
-		constraint-rate = <44100>,
-				<88200>,
-				<176400>,
-				<32000>,
-				<48000>,
-				<96000>,
-				<192000>;
-	};
-
 	busfreq {
 		status = "disabled";
 	};
@@ -259,18 +243,6 @@
 	clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k", "pll11k";
 };
 
-&sai4 {
-	assigned-clocks = <&clk IMX8MQ_CLK_SAI4>;
-	assigned-clock-parents = <&clk IMX8MQ_AUDIO_PLL1_OUT>;
-	assigned-clock-rates = <24576000>;
-	clocks = <&clk IMX8MQ_CLK_SAI4_IPG>, <&clk IMX8MQ_CLK_DUMMY>,
-		<&clk IMX8MQ_CLK_SAI4_ROOT>, <&clk IMX8MQ_CLK_DUMMY>,
-		<&clk IMX8MQ_CLK_DUMMY>, <&clk IMX8MQ_AUDIO_PLL1_OUT>,
-		<&clk IMX8MQ_AUDIO_PLL2_OUT>;
-	clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k", "pll11k";
-	status = "okay";
-};
-
 &i2c2 {
 	status = "okay";