Make Linkify use the SIM card's country for phone numbers

Previously, it was using the locale's country code, which doesn't
make sense, since the locale's country code means which dialect of
the language the system should function in.  We should use the SIM
card's country code instead.

Change-Id: Ib942f92f3218c943669fc6150d6cc6b4e340b451
Fixes: 30000652
Test: cts-tradefed run cts-dev --module CtsTextTestCases
Test: adb shell am instrument -w -e package android.text com.android.frameworks.coretests/android.support.test.runner.AndroidJUnitRunner
Test: Manual