Add Wifi High Perf. mode during a call.
Add Wifi High Perf. mode during a call.

To prevent the wifi from entering low-power mode due to the screen off
triggered by the proximity sensor.

Change-Id: I490bc594d800bc30c256e52ef3bce08bf86bc7b1

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base