drm/tegra: dpaux: Add Tegra186 support

DPAUX is the same as on previous generations. Supporting it is as simple
as adding the compatible string so that the driver will bind to any of
the devices.

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

drivers/gpu/drm/tegra/dpaux.c

@@ -636,6 +636,7 @@ static const struct dev_pm_ops tegra_dpaux_pm_ops = {
 };
 
 static const struct of_device_id tegra_dpaux_of_match[] = {
+	{ .compatible = "nvidia,tegra186-dpaux", },
 	{ .compatible = "nvidia,tegra210-dpaux", },
 	{ .compatible = "nvidia,tegra124-dpaux", },
 	{ },