Revert "fmradio: use caf naming"

This reverts commit 7f37b3b4ce2f98576da1d334f1ee5b77dab5e2a8.

Change-Id: Ie180a9193b65ff8c68ea6f2401bc3b21e55f849c

Conflicts:
	media/libstagefright/FMRadioSource.cpp