Bug 1122025: Set LOG_TAG
Bug 1122025: Set LOG_TAG

This commit sets the prefix for all logcat output from bluetoothd.

hobinjk/platform_system_bluetoothd,tdz/platform_system_bluetoothd,BruceSunMozilla/platform_system_bluetoothd,andyvand/platform_system_bluetoothd,mozilla-b2g/platform_system_bluetoothd,hobinjk/system-bluetoothd