arm64: dts: qcom: sdm845: move sound node out of soc

The sound node is not a property of a soc, but rather board as it
describes the sound configuration.  It also does not have unit address:

  sdm845-shift-axolotl.dtb: soc@0: sound: {} should not be valid under {'type': 'object'}
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221210115704.97614-3-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/sdm845.dtsi

@@ -3972,9 +3972,6 @@ lmh_cluster0: lmh@17d78800 {
 			#interrupt-cells = <1>;
 		};
 
-		sound: sound {
-		};
-
 		usb_1_hsphy: phy@88e2000 {
 			compatible = "qcom,sdm845-qusb2-phy", "qcom,qusb2-v2-phy";
 			reg = <0 0x088e2000 0 0x400>;
@@ -5365,6 +5362,9 @@ wifi: wifi@18800000 {
 		};
 	};
 
+	sound: sound {
+	};
+
 	thermal-zones {
 		cpu0-thermal {
 			polling-delay-passive = <250>;