Merge "Add feature flag for TelephonyManager#get/setAllowedCarriers" am: c4fc7779

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2017 The Android Open Source Project

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<!-- Feature for devices with telephony carrier restriction mechanism. -->

<permissions>

    <feature name="android.hardware.telephony.carrierlock" />

</permissions>