arm64: dts: rockchip: generalize rk3399 #sound-dai-cells

The soc spdif and i2s controllers always only have one compontent, so
always require #sound-dai-cells to be 0. Therefore there is no need to
duplicate this property in individual boards.

So move them to rk3399.dtsi.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-firefly.dts

@@ -492,19 +492,16 @@ accelerometer@68 {
 &i2s0 {
 	rockchip,playback-channels = <8>;
 	rockchip,capture-channels = <8>;
-	#sound-dai-cells = <0>;
 	status = "okay";
 };
 
 &i2s1 {
 	rockchip,playback-channels = <2>;
 	rockchip,capture-channels = <2>;
-	#sound-dai-cells = <0>;
 	status = "okay";
 };
 
 &i2s2 {
-	#sound-dai-cells = <0>;
 	status = "okay";
 };
 

arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi

@@ -402,7 +402,6 @@ &i2s0 {
 	pinctrl-0 = <&i2s0_2ch_bus>;
 	rockchip,playback-channels = <2>;
 	rockchip,capture-channels = <2>;
-	#sound-dai-cells = <0>;
 	status = "okay";
 };
 

arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator.dts

@@ -149,7 +149,6 @@ accelerometer@68 {
 &i2s0 {
 	rockchip,playback-channels = <8>;
 	rockchip,capture-channels = <8>;
-	#sound-dai-cells = <0>;
 	status = "okay";
 };
 
@@ -198,6 +197,5 @@ &sdio0 {
 &spdif {
 	i2c-scl-rising-time-ns = <450>;
 	i2c-scl-falling-time-ns = <15>;
-	#sound-dai-cells = <0>;
 	status = "okay";
 };

arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi

@@ -425,7 +425,6 @@ &i2c3 {
 };
 
 &i2s2 {
-	#sound-dai-cells = <0>;
 	status = "okay";
 };
 

arch/arm64/boot/dts/rockchip/rk3399.dtsi

@@ -1483,6 +1483,7 @@ spdif: spdif@ff870000 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&spdif_bus>;
 		power-domains = <&power RK3399_PD_SDIOAUDIO>;
+		#sound-dai-cells = <0>;
 		status = "disabled";
 	};
 
@@ -1498,6 +1499,7 @@ i2s0: i2s@ff880000 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2s0_8ch_bus>;
 		power-domains = <&power RK3399_PD_SDIOAUDIO>;
+		#sound-dai-cells = <0>;
 		status = "disabled";
 	};
 
@@ -1512,6 +1514,7 @@ i2s1: i2s@ff890000 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&i2s1_2ch_bus>;
 		power-domains = <&power RK3399_PD_SDIOAUDIO>;
+		#sound-dai-cells = <0>;
 		status = "disabled";
 	};