driver: sound: Add driver for max98088 codec.

BUG=chrome-os-partner:18696
TEST=emerge-daisy_spring chromeos-u-boot
BRANCH=spring

Change-Id: I3bd628077000e171ebef339cee3c4a896ec1cb1f
Signed-off-by: Chih-Chung Chang <chihchung@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/49432
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
7 files changed