media: i2c: ds90ub960: Remove of_node assignment

Remove of_node assignment which duplicates fwnode in struct i2c_board_info.
In general drivers must not set both, it's quite confusing. The I²C core
will consider fwnode with a priority and of_node is subject to remove from
above mentioned data structure.

Reviewed-by: Sakari Ailus <[e-mail]>
Acked-by: Sakari Ailus <[e-mail]>
Signed-off-by: Andy Shevchenko <[e-mail]>
Tested-by: Tomi Valkeinen <[e-mail]>
Signed-off-by: Wolfram Sang <[e-mail]>

drivers/media/i2c/ds90ub960.c

···
 	struct device *dev = &priv->client->dev;
 	struct ds90ub9xx_platform_data *ser_pdata = &rxport->ser.pdata;
 	struct i2c_board_info ser_info = {
-		.of_node = to_of_node(rxport->ser.fwnode),
 		.fwnode = rxport->ser.fwnode,
 		.platform_data = ser_pdata,
 	};