Disable soundvolume effect on Xiaomi Mi 11 Lite 5G

Fixes audio distorsion on this device and may fix on other Qualcomm devices

phh-prop-handler.sh

@@ -184,3 +184,19 @@ if [ "$1" == "persist.sys.phh.backlight.scale" ];then
     fi
     exit
 fi
+
+if [ "$1" == "persist.sys.phh.disable_soundvolume_effect" ];then
+    if [[ "$prop_value" != "0" && "$prop_value" != "1" ]]; then
+        exit 1
+    fi
+
+    if [[ "$prop_value" == 1 ]];then
+        mount /system/phh/empty /vendor/lib/soundfx/libvolumelistener.so
+        mount /system/phh/empty /vendor/lib64/soundfx/libvolumelistener.so
+    else
+        umount /vendor/lib/soundfx/libvolumelistener.so
+        umount /vendor/lib64/soundfx/libvolumelistener.so
+    fi
+    restartAudio
+    exit
+fi

vndk.rc

@@ -47,6 +47,9 @@ on property:persist.sys.phh.vsmart.dt2w=*
 on property:persist.sys.phh.backlight.scale=*
     exec u:r:phhsu_daemon:s0 root -- /system/bin/phh-prop-handler.sh "persist.sys.phh.backlight.scale"
 
+on property:persist.sys.phh.disable_soundvolume_effect=*
+    exec u:r:phhsu_daemon:s0 root -- /system/bin/phh-prop-handler.sh "persist.sys.phh.disable_soundvolume_effect"
+
 on property:ro.sf.lcd_density=*
     restart surfaceflinger