fmradio: cleanup QCOM_HARDWARE/STE_FM defs and ifdef

Change-Id: I00b5e6536511b3bedee6105bf010ee2b5f2e36ac
qcom-fm: audio: Add support for FM feature

-Define audio stream for FM
-Define audio source for FM RX and FM RX A2DP

Change-Id: If24e4c32916f6614e3367b4c9f2cd828562e0347

Conflicts:
	include/system/audio.h