Tegra12x: defconfig: Add HDMI audio device

Tegra12x: defconfig: Add HDMI audio device

Add HDMI audio device

Bug: 1470703

Signed-off-by: Rahool Paliwal <rpaliwal@nvidia.com>
Change-Id: Ic289366f9a25853fb6faa2537790242c97e1c33b
Reviewed-on: http://git-master/r/375851
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-by: Kaustubh Purandare <kpurandare@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: Bryan Wu <pengw@nvidia.com>
Tested-by: Bryan Wu <pengw@nvidia.com>
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>