Tegra114: Dalmore: Enable support for 'sound' command (audio play)

With this change, I can use 'sound init;sound play' to play a
beep/buzz on the Dalmore headphones (no speakers on my Dalmore).

BUG=chrome-os-partner:23782
BRANCH=Tegra Dalmore
TEST=As above, built/booted T114 Dalmore and heard beep via HPO.

Change-Id: Ic16b08c1004071621bb850007b742135738a45e3
Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-on: https://chromium-review.googlesource.com/175353
1 file changed