Settings: Add proximity wake-up toggle

Change-Id: I2f2449eb324f61b2f7a93acd91b99f144930e66e

	modified:   src/com/android/settings/DisplaySettings.java
Re-implement headset settings

Signed-off-by: Ayysir <ayysir@aospal.com>
Change-Id: I1ee973bec35d95285a646b86213ced3dd15852ed