Add remaining whitelisted controllers

Because I missed them in the long whitelist the first time...

Change-Id: I9fbd7b33e06b3f2f6e5e5778f78abfdb1a52006a
Merged-In: I01c8c80fe306667c1d3ac007b16fad546c5a5f40
Fixes: 79779103
Test: robotests

src/com/android/settings/notification/AlarmVolumePreferenceController.java

@@ -18,6 +18,7 @@ package com.android.settings.notification;
 
 import android.content.Context;
 import android.media.AudioManager;
+import android.text.TextUtils;
 
 import com.android.settings.R;
 
@@ -36,6 +37,11 @@ public class AlarmVolumePreferenceController extends
                 && !mHelper.isSingleVolume() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
     }
 
+    @Override
+    public boolean isSliceable() {
+        return TextUtils.equals(getPreferenceKey(), "alarm_volume");
+    }
+
     @Override
     public String getPreferenceKey() {
         return KEY_ALARM_VOLUME;