t0lte: boost audio incall

-speakerphone was being clipped, scale back the index
and increase the overall boost (includes out-of-call audio)
-increase the other incall outputs

Change-Id: I7a9748afd5c9ace41909a02c842bda946687b9b9
t0lte: consolidate variants

Change-Id: Ie56c0692ec3924afd94e28d1875efd01b4020872
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