Mark APN fields as uneditable for vzw per their requirement.

Fields marked uneditable are: type, protocol, bearer, carrier_enabled

Bug: 30457714
Change-Id: I0d3f1af25e52d48c25ebedfffa37b708dd23fcf5
diff --git a/assets/carrier_config_310004.xml b/assets/carrier_config_310004.xml
index 57b60ec..1efe62c 100644
--- a/assets/carrier_config_310004.xml
+++ b/assets/carrier_config_310004.xml
@@ -32,5 +32,13 @@
         <boolean name="disable_severe_when_extreme_disabled_bool" value="false" />
         <boolean name="mmsCloseConnection" value="true"/>
         <int name="wfc_spn_format_idx_int" value="1" />
+        <string-array name="read_only_apn_fields_string_array" num="6">
+            <item value="type" />
+            <item value="protocol" />
+            <item value="roaming_protocol" />
+            <item value="bearer" />
+            <item value="bearer_bitmask" />
+            <item value="carrier_enabled" />
+        </string-array>
     </carrier_config>
 </carrier_config_list>