Make the WFC prefence non-editable for Verizon.

b/28989849: The default WiFi calling preference for Verizon should be
cellular preferred per Carrier Requirements.

Change-Id: Ief9c01e2fee918942580296c2fa3159ce2a7f8a3
diff --git a/assets/carrier_config_20404.xml b/assets/carrier_config_20404.xml
index 2d8bbbf..d58cf8b 100644
--- a/assets/carrier_config_20404.xml
+++ b/assets/carrier_config_20404.xml
@@ -10,5 +10,6 @@
         <boolean name="broadcast_emergency_call_state_changes_bool" value="true" />
         <string name="carrier_eri_file_name_string">eri_311480.xml</string>
         <int name="carrier_default_wfc_ims_mode_int" value="1"/>
+        <boolean name="editable_wfc_mode_bool" value="false"/>
     </carrier_config>
 </carrier_config_list>
diff --git a/assets/carrier_config_310004.xml b/assets/carrier_config_310004.xml
index abbc869..f89727e 100644
--- a/assets/carrier_config_310004.xml
+++ b/assets/carrier_config_310004.xml
@@ -28,5 +28,6 @@
         <boolean name="broadcast_emergency_call_state_changes_bool" value="true" />
         <string name="carrier_eri_file_name_string">eri_311480.xml</string>
         <int name="carrier_default_wfc_ims_mode_int" value="1"/>
+        <boolean name="editable_wfc_mode_bool" value="false"/>
     </carrier_config>
 </carrier_config_list>
diff --git a/assets/carrier_config_311480.xml b/assets/carrier_config_311480.xml
index b2cdf3f..45b755f 100644
--- a/assets/carrier_config_311480.xml
+++ b/assets/carrier_config_311480.xml
@@ -35,5 +35,6 @@
         <int name="carrier_default_wfc_ims_mode_int" value="1"/>
         <boolean name="treat_downgraded_video_calls_as_video_calls_bool" value="true" />
         <boolean name="drop_video_call_when_answering_audio_call_bool" value="true" />
+        <boolean name="editable_wfc_mode_bool" value="false"/>
     </carrier_config>
 </carrier_config_list>