add Voice Wakeup switch

Change-Id: I1c129adf1104dd95d3afb76224af4c9ba2b5db96

Conflicts:
	AndroidManifest.xml
	res/values/cm_strings.xml
	src/com/android/settings/DevelopmentSettings.java
	src/com/android/settings/Settings.java
	src/com/android/settings/SettingsPreferenceFragment.java
	src/com/android/settings/Utils.java
	src/com/android/settings/WirelessSettings.java
	src/com/android/settings/cyanogenmod/LockscreenInterface.java
	src/com/android/settings/cyanogenmod/PrivacySettings.java
Settings: Fix VoiceWakeup settings crash

The activity wasn't able to launch because
of this missing entry.

Change-Id: I7a3bee2ce047a27fe16975955b2263aeeb33b8a7
Signed-off-by: Roman Birg <roman@cyngn.com>

Conflicts:
	AndroidManifest.xml