Merge branch 'kk4.4' of https://github.com/SlimRoms/device_samsung_galaxys2-common into kk4.4
Enable Bluetooth LE

Change-Id: Ibd5be9040a8d7380e7da0ebab23dd687327feea3
Decrease call ring delay from 3000 to 500

Change-Id: I2b3dbc97a81e33c642939eb55f79e2cf935c9e6c
Increase wifi scan interval to 300 seconds

Change-Id: I67dcfb3eb8f5be6655a1acf1e05fb92a5b87e174