Make MICROPHONE_MUTE_CHANGED broadcast protected

Bug: 109856153
Test: Build, Ensure broadcast does not cause error.

Change-Id: I1f329eb7df36fc921f6d10a2fcb00c32d7bd3d1d
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index e33ecb8..71b47f3 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -262,6 +262,7 @@
 
     <protected-broadcast android:name="android.intent.action.HEADSET_PLUG" />
     <protected-broadcast android:name="android.media.action.HDMI_AUDIO_PLUG" />
+    <protected-broadcast android:name="android.media.action.MICROPHONE_MUTE_CHANGED" />
 
     <protected-broadcast android:name="android.media.AUDIO_BECOMING_NOISY" />
     <protected-broadcast android:name="android.media.RINGER_MODE_CHANGED" />