Add audio firmware symlinks

Change-Id: I5ea375a05d0cdf9b8f783382911e7652318a0e15

Conflicts:
	Android.mk
audio: change maxBitRate of AMRWB to 23.85kbps

From CAF:
https://www.codeaurora.org/cgit/quic/la/device/qcom/common/commit/media/media_profiles.xml?h=jb_2.5&id=0ff64ae4d95738ef22835f1bb1c423226ecb9c9a

Change-Id: Ib0fb64d08719073b997973735eae242cb16760c8
added missing audio_effects.conf