prototype-U/android_device_htc_protou — pull request #7 by filmkorn (2014-09-20 14:25:58+00:00)
Title: Add Bluetooth 4.0 Low Energy (BLE)

I can't test this, since i don't know how to compile the whole thing - but manually creating the file "system/etc/permissions/android.hardware.bluetooth_le.xml" allows me to use my BLE heart rate monitor (Polar H7) with my protou.