Enabling DTMF tones option for Sprint, US Cellular.

Option appears under Phone --> Settings --> Call Settings.

Added overlays for:
mcc310-mnc120 Sprint
mcc311-mnc490 Sprint
mcc311-mnc220 US Cellular
mcc311-mnc580 US Cellular
mcc311-mnc390 Verizon Wireless
mcc311-mnc480 Verizon Wireless

Bug: 17585245
Change-Id: I713f9f45c7b36d112eac56e30ca4e17a75673dbc
diff --git a/res/values-mcc310-mnc120/config.xml b/res/values-mcc310-mnc120/config.xml
new file mode 100644
index 0000000..7c269e0
--- /dev/null
+++ b/res/values-mcc310-mnc120/config.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<!-- Phone app resources that may need to be customized
+     for different hardware or product builds. -->
+<resources>
+    <!-- Flag indicating if dtmf tone type is enabled -->
+    <bool name="dtmf_type_enabled">true</bool>
+</resources>
diff --git a/res/values-mcc311-mnc220/config.xml b/res/values-mcc311-mnc220/config.xml
new file mode 100644
index 0000000..7c269e0
--- /dev/null
+++ b/res/values-mcc311-mnc220/config.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<!-- Phone app resources that may need to be customized
+     for different hardware or product builds. -->
+<resources>
+    <!-- Flag indicating if dtmf tone type is enabled -->
+    <bool name="dtmf_type_enabled">true</bool>
+</resources>
diff --git a/res/values-mcc311-mnc390/config.xml b/res/values-mcc311-mnc390/config.xml
index 3e6a69b..4656904 100644
--- a/res/values-mcc311-mnc390/config.xml
+++ b/res/values-mcc311-mnc390/config.xml
@@ -19,4 +19,6 @@
 <resources>
     <!-- Show APN Settings for some CDMA carriers -->
     <bool name="config_show_apn_setting_cdma">true</bool>
+    <!-- Flag indicating if dtmf tone type is enabled -->
+    <bool name="dtmf_type_enabled">true</bool>
 </resources>
diff --git a/res/values-mcc311-mnc490/config.xml b/res/values-mcc311-mnc490/config.xml
new file mode 100644
index 0000000..7c269e0
--- /dev/null
+++ b/res/values-mcc311-mnc490/config.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<!-- Phone app resources that may need to be customized
+     for different hardware or product builds. -->
+<resources>
+    <!-- Flag indicating if dtmf tone type is enabled -->
+    <bool name="dtmf_type_enabled">true</bool>
+</resources>
diff --git a/res/values-mcc311-mnc580/config.xml b/res/values-mcc311-mnc580/config.xml
new file mode 100644
index 0000000..7c269e0
--- /dev/null
+++ b/res/values-mcc311-mnc580/config.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<!-- Phone app resources that may need to be customized
+     for different hardware or product builds. -->
+<resources>
+    <!-- Flag indicating if dtmf tone type is enabled -->
+    <bool name="dtmf_type_enabled">true</bool>
+</resources>