FM Radio: Add support for FM Radio in Android

Creating interface and framework for using FM Radio
RX and TX from different vendors.

Signed-off-by: Christian Bejram <christian.bejram@stericsson.com>
Change-Id: I1a71aed01bfffdddfabf1cdfbfa3707cb1ed016b

Conflicts:
	core/java/android/app/ContextImpl.java

Conflicts:

	core/java/android/app/ContextImpl.java

Signed-off-by: ChampionSwimmer <android@championswimmer.tk>

Conflicts:
	fmradio/java/com/stericsson/hardware/fm/FmReceiverService.java
	fmradio/java/com/stericsson/hardware/fm/FmTransmitterService.java
	fmradio/jni/android_fmradio_Receiver.cpp
FM Radio: do not try to change thread priority

The FM Radio services try to change the current thread when
instantiated, for unknown reason. This actually ends up changing the
priority of SystemServer's main thread. Probably a bad idea. This is
the cause of the various glitch fallout after the FM Radio merges.

Change-Id: I292aff3380c717ff1bc7d45f6303c0d330ef642d