drm/i2c/tda998x: convert to use i2c_new_client_device()

Move away from the deprecated API and return the shiny new ERRPTR where
useful.

Signed-off-by: Wolfram Sang <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Signed-off-by: Sam Ravnborg <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/i2c/tda998x_drv.c

···
 	cec_info.platform_data = &priv->cec_glue;
 	cec_info.irq = client->irq;
 
-	priv->cec = i2c_new_device(client->adapter, &cec_info);
-	if (!priv->cec) {
-		ret = -ENODEV;
+	priv->cec = i2c_new_client_device(client->adapter, &cec_info);
+	if (IS_ERR(priv->cec)) {
+		ret = PTR_ERR(priv->cec);
 		goto fail;
 	}