Smaug: Enable audio support (RT5677 codec)

The I2S/AHUB/XBAR addresses are behind the APE
on T210 (Audio Processing Engine). With these
changes, I can hear a mild beep from the speakers
and HP. May need to increase volume if it's deemed
too quiet.

BUG=chrome-os-partner:38343
BRANCH=none
TEST=Built Smaug OK, heard sound on speakers/HP
with Ctrl+U.

Change-Id: Ie27b077802fe79f7d65159d8e3980ad12c2054ee
Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-on: https://chromium-review.googlesource.com/266838
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
3 files changed