Telephony: implement noise suppression for phone calls (2/2)

Forward port from cm-10.2

Change-Id: Ie72449f952f99b410fbb5bc4a8e6cbc833e6176f

Conflicts:
	res/values/cm_strings.xml
	res/values/config.xml
	res/xml/call_feature_setting.xml
	src/com/android/phone/CallController.java
	src/com/android/phone/CallFeaturesSetting.java
	src/com/android/phone/CallNotifier.java
	src/com/android/phone/PhoneUtils.java