arm64: dts: qcom: msm8996: Correct apr-domain property

The domain specifier was changed from using "reg" to "qcom,apr-domain",
update the dts accordingly.

Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/msm8996.dtsi

@@ -1845,7 +1845,7 @@
 				power-domains = <&gcc HLOS1_VOTE_LPASS_ADSP_GDSC>;
 				compatible = "qcom,apr-v2";
 				qcom,smd-channels = "apr_audio_svc";
-				reg = <APR_DOMAIN_ADSP>;
+				qcom,apr-domain = <APR_DOMAIN_ADSP>;
 				#address-cells = <1>;
 				#size-cells = <0>;