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>
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 1993ab9..dfbbd88 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1060,6 +1060,7 @@
 	{ .compatible = "nvidia,tegra132-dsi", },
 	{ .compatible = "nvidia,tegra210-dc", },
 	{ .compatible = "nvidia,tegra210-dsi", },
+	{ .compatible = "nvidia,tegra210-sor", },
 	{ /* sentinel */ }
 };