drm/tegra: hdmi - Add Tegra124 support

Tegra124 is mostly backwards-compatible with Tegra114. However, Tegra124
supports a few more features (e.g. interlacing, ...). Introduce a new
compatible string and TMDS tables to cope with these differences.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --cc drivers/gpu/drm/tegra/drm.c
Simple merge

diff --cc drivers/gpu/drm/tegra/hdmi.c
Simple merge