drm/tegra: sor: Hook up I2C-over-AUX to output

This is necessary for the output abstraction to retrieve a list of valid
modes from the EDID of a connected panel/monitor. This will be useful in
conjunction with DisplayPort support that will be added in a subsequent
patch, so that the driver can read EDID via the AUX channel.

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

drivers/gpu/drm/tegra/sor.c

@@ -3524,6 +3524,8 @@ static int tegra_sor_probe(struct platform_device *pdev)
 
 		if (!sor->aux)
 			return -EPROBE_DEFER;
+
+		sor->output.ddc = &sor->aux->ddc;
 	}
 
 	if (!sor->aux) {