CarrierConfig: enable IMS for CH provdiders

Change-Id: If6545eaa9b86e694c145a1bde110c8d814e16040
diff --git a/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml b/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml
index 412a4f2..61500cd 100644
--- a/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml
+++ b/overlay/CarrierConfig/packages/apps/CarrierConfig/res/xml/vendor.xml
@@ -1593,6 +1593,18 @@
        <boolean name="carrier_volte_available_bool" value="true" />
        <boolean name="carrier_vt_available_bool" value="true" />
     </carrier_config>
+    <carrier_config mcc="228" mnc="01">
+       <boolean name="carrier_volte_available_bool" value="true" />
+       <boolean name="carrier_vt_available_bool" value="true" />
+    </carrier_config>
+    <carrier_config mcc="228" mnc="02">
+       <boolean name="carrier_volte_available_bool" value="true" />
+       <boolean name="carrier_vt_available_bool" value="true" />
+    </carrier_config>
+    <carrier_config mcc="228" mnc="03">
+       <boolean name="carrier_volte_available_bool" value="true" />
+       <boolean name="carrier_vt_available_bool" value="true" />
+    </carrier_config>
     <carrier_config mcc="232" mnc="01">
        <boolean name="carrier_volte_available_bool" value="true" />
        <boolean name="carrier_vt_available_bool" value="true" />