audio: Add support for Audience EarSmart ICs

Some devices (often T-Mobile variants) have extra hardware for
incall audio processing.
Audio must be routed to the ES IC properly so it can be passed to
ALSA, otherwise the RX/TX streams are lost.

Change-Id: Ib29c747d5728a09726e14bab00f26ad273400aba
6 files changed