drm/tegra: sor: Add Tegra210 eDP support

The SOR found on Tegra210 is very similar to the version found on
Tegra124, except that it no longer supports LVDS.

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

drivers/gpu/drm/tegra/drm.c

@@ -1060,6 +1060,7 @@ static const struct of_device_id host1x_drm_subdevs[] = {
 	{ .compatible = "nvidia,tegra132-dsi", },
 	{ .compatible = "nvidia,tegra210-dc", },
 	{ .compatible = "nvidia,tegra210-dsi", },
+	{ .compatible = "nvidia,tegra210-sor", },
 	{ /* sentinel */ }
 };