Notify the system dialer when the Carrier VVM app is installed

Before O the telephony VVM app will disable itself if the carrier
VVM app is installed by the user. After O the system dialer which
is in charge of VVM should still respect this behavior.

In this CL a hidden API broadcast will be sent to the system dialer
if the carrier VVM app listed in CarrierConfig is installed.

This is a intermediate solution for O. In P this will either be removed
or made system API.

Bug: 38329114
Test: manual - install carrier VVM app
    install non-VVM app
    install carrier VVM app without a SIM
    install app on carrier without VVM app

Change-Id: I14d3914ceb3abb99a38ad601bb739c15b82f393f
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 9e39d30..c2b9800 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -76,6 +76,7 @@
     <protected-broadcast android:name= "com.android.ims.REGISTRATION_ERROR" />
     <protected-broadcast android:name= "com.android.phone.vvm.omtp.sms.REQUEST_SENT" />
     <protected-broadcast android:name= "com.android.phone.vvm.ACTION_VISUAL_VOICEMAIL_SERVICE_EVENT" />
+    <protected-broadcast android:name= "com.android.internal.telephony.CARRIER_VVM_PACKAGE_INSTALLED" />
 
     <uses-permission android:name="android.permission.BROADCAST_STICKY" />
     <uses-permission android:name="android.permission.CALL_PHONE" />