cipher: overlay: Enable LTE+/4G+ icons by default

* Enable 4G+/LTE+ icon when available.
* Depends on device modem/carrier/network configuration.

Change-Id: Ib35743f060a6c0eb159c1db8e178f4e951e23d9a
Co-authored-by: 1nfrag <sil3ntcll@gmail.com>
Co-authored-by: Luca Stefani <luca.stefani.ge1@gmail.com>
Co-authored-by: Tim Zimmermann <tim@linux4.de>
Signed-off-by: techyminati <sinha.aryan03@gmail.com>

Author: 4 people

overlay/common/packages/apps/CarrierConfig/res/xml/vendor.xml

@@ -0,0 +1,12 @@
+<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
+<carrier_config_list>
+    <carrier_config>
+        <!-- Config to show LTE+ icon if available -->
+        <boolean name="hide_lte_plus_data_icon_bool" value="false"/>
+
+        <!-- Should "4G" be shown instead of "LTE" when the network is NETWORK_TYPE_LTE? -->
+        <boolean name="show_4g_for_lte_data_icon_bool" value="true"/>
+
+        <int name="lte_plus_threshold_bandwidth_khz_int" value="0"/>
+    </carrier_config>
+</carrier_config_list>