Enable the LTE feature

Advertise the LTE capability of the device in the framework.

FPIIM-275

Changes in the cherry-pick: This uses the Android 9 version of the file
as baseline and adds the contents introduced in the original change on
top of that.

Issue: FP2P-241
Change-Id: I5a0950d1869312ad927a816cf2ebc089386108f5
(cherry picked from commit af96c29711861a332490954bebba7deaa98f6b35)
diff --git a/overlay/packages/services/Telephony/res/values/config.xml b/overlay/packages/services/Telephony/res/values/config.xml
new file mode 100644
index 0000000..5b45b07
--- /dev/null
+++ b/overlay/packages/services/Telephony/res/values/config.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+     Copyright 2017-2020 Fairphone B.V.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- Phone app resources that may need to be customized
+     for different hardware or product builds. -->
+<resources>
+    <!-- Show enabled lte option for lte device -->
+    <bool name="config_enabled_lte" translatable="false">true</bool>
+</resources>