CHROMIUM: ASoC: max98088 - expose digital mic enable switches.
Add a control for enable right and left digital mic. This control
routes the digital mic input through the ADC. It must be disabled for
analog input to work.
BUG=chrome-os-partner:18454
TEST=toggle switches, see changes with i2cdump.
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Change-Id: I8ed493ce9aea4f94f4feda23172e2e3251e27b51
Reviewed-on: https://gerrit.chromium.org/gerrit/46904
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>