msm8974-common: Allow to disable the new scan API for manual network …

…search.

The implementation to attempt new API and then fallback after
error is generic but may be not efficient. For the devices that
is not capable of using new API, it lengthens the network search
because of the new API scan trial in the first place and may fail
if the error is not properly caught.
(Refer to Ifebbac9965a40acaff0d50d32ca8603c72a6a77f for details)

As an alternative, this commit provides a config for devices that
are known as not capable of using new API to disable new API scan
and start network search through old API directly.

overlay-lineage/packages/services/Telephony/res/values/config.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 The Android Open Source Project
+     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.
+-->
+
+<!-- NOTE: Many variables that used to be in this file have been migrated to
+     CarrierConfigManager.java. Please consider whether new variables belong
+     there before adding to this file. Variables here should be more closely
+     related to devices than to networks. -->
+
+<!-- Phone app resources that may need to be customized
+     for different hardware or product builds. -->
+<resources>
+     <!-- Flag indicating if network query through TelephonyManager.requestNetworkScan() should be
+         disabled.
+         If set to true, it will send network query through Phone.getAvailableNetworks() directly
+         rather than attempt to query through TelephonyManager.requestNetworkScan() first. -->
+    <bool name="config_disable_TelephonyManager_network_scan">true</bool>
+ </resources>