Phone: Add a controller for proximity sensor

Add the setting for enable proximity sensor or not when calling

ps2: Enable via overlay

Change-Id: I42bc05ae1c22443cca782ac1ae66d5d5bb4ac858
Signed-off-by: anerikg <anerikgames@gmail.com>

Conflicts:
	res/values-zh-rCN/cm_strings.xml
	res/xml/call_feature_setting.xml
	src/com/android/phone/CallFeaturesSetting.java