Merge "config: support a2dp echo reference for sound trigger"

        <ctl name="EC Reference SampleRate" value="48000"/>

    </path>

    <path name="echo-reference a2dp">

        <ctl name="AUDIO_REF_EC_UL1 MUX" value="SLIM_7_RX"/>

        <ctl name="EC Reference Channels" value="Two"/>

        <ctl name="EC Reference Bit Format" value="S16_LE"/>

        <ctl name="EC Reference SampleRate" value="48000"/>

    </path>

</mixer>