msm8610: add echo reference path

Adding the mixer control for echo reference.
This change removes the hardcoding and adds mixer
control in the xml file.
Change-Id: Ia8895e9c2cb57aaa0c0233cc503de7db3bc9d09d
Merge "msm8610: add echo reference path"
Enable DSP-based AEC and NS for WebRTC

Change-Id: I82f41dbc4258a405f929a52764b65dfce7d25d43
Merge "Enable DSP-based AEC and NS for WebRTC"
msm8610: Move ECNS configuration flag

Move ECNS configuration flag to common makefile b2g_product.mk

Change-Id: I386ec1b5b867feeaaba6d700ff55496bb2f6e64e
Merge "msm8610: Move ECNS configuration flag"
Merge branch 'foxfone-one-v2.0' into MSM.FIREFOX.2.0
Merge branch 'foxfone-one-v2.0' into MSM.FIREFOX.2.0