overlay: enable ims/wfc for three UK

Change-Id: I76f6794422a3e865ec5de0ed3ba35ba738f14cf3
diff --git a/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml b/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml
index b0ff1b9..81243e2 100644
--- a/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml
+++ b/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml
@@ -1303,6 +1303,10 @@
         <boolean name="support_downgrade_vt_to_audio_bool" value="true" />
     </carrier_config>
     <carrier_config mcc="234" mnc="10" />
+    <carrier_config mcc="234" mnc="20">
+        <boolean name="carrier_volte_available_bool" value="true" />
+        <boolean name="carrier_wfc_ims_available_bool" value="true" />
+    </carrier_config>
     <carrier_config mcc="454" mnc="12">
         <boolean name="allow_use_ims_for_ecc_bool" value="false" />
         <boolean name="carrier_volte_available_bool" value="true" />