arm64: dts: qcom: msm8916-acer-a1-724: Add sound and modem (v3)

Enable sound and modem for Acer Iconia Talk S A1-724.
The setup is similar to most MSM8916 devices, i.e.:

- QDSP6 audio
- Earpiece/headphones/microphones via digital/analog codec in
  MSM8916/PM8916
- WWAN Internet via BAM-DMUX

v2: Fix DMIC1
v3: use model = "acer-a1-724";
Signed-off-by: Raymond Hackley <raymondhackley@protonmail.com>

arch/arm64/boot/dts/qcom/msm8916-acer-a1-724.dts

@@ -3,6 +3,7 @@
 /dts-v1/;
 
 #include "msm8916-pm8916.dtsi"
+#include "msm8916-modem-qdsp6.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
@@ -168,6 +169,10 @@
 	remote-endpoint = <&panel_in>;
 };
 
+&mpss_mem {
+	reg = <0x0 0x86800000 0x0 0x4500000>;
+};
+
 &pm8916_resin {
 	linux,code = <KEY_VOLUMEDOWN>;
 	status = "okay";
@@ -203,6 +208,19 @@
 	status = "okay";
 };
 
+&sound {
+	model = "acer-a1-724";
+	audio-routing =
+		"DMIC1", "MIC BIAS External1",
+		"DMIC1", "Digital Mic1",
+		"AMIC2", "MIC BIAS Internal2",
+		"DMIC2", "MIC BIAS External1",
+		"DMIC2", "Digital Mic2";
+
+	pinctrl-0 = <&cdc_pdm_default &sec_mi2s_default &pri_mi2s_mclk_default &cdc_dmic_default>;
+	pinctrl-1 = <&cdc_pdm_sleep &sec_mi2s_sleep &pri_mi2s_mclk_sleep &cdc_dmic_sleep>;
+};
+
 &usb {
 	extcon = <&usb_id>, <&usb_id>;
 	status = "okay";