iio: light: fix vcnl4000 devicetree hooks

Since commit ebd457d5 ("iio: light: vcnl4000 add devicetree hooks")
the of_match_table is supported but the data shouldn't be a string.
Instead it shall be one of 'enum vcnl4000_device_ids'. Also the matching
logic for the vcnl4020 was wrong. Since the data retrieve mechanism is
still based on the i2c_device_id no failures did appeared till now.

Fixes: ebd457d5 ("iio: light: vcnl4000 add devicetree hooks")
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Angus Ainslie (Purism) angus@akkea.ca
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/light/vcnl4000.c

@@ -398,19 +398,19 @@ static int vcnl4000_probe(struct i2c_client *client,
 static const struct of_device_id vcnl_4000_of_match[] = {
 	{
 		.compatible = "vishay,vcnl4000",
-		.data = "VCNL4000",
+		.data = (void *)VCNL4000,
 	},
 	{
 		.compatible = "vishay,vcnl4010",
-		.data = "VCNL4010",
+		.data = (void *)VCNL4010,
 	},
 	{
-		.compatible = "vishay,vcnl4010",
-		.data = "VCNL4020",
+		.compatible = "vishay,vcnl4020",
+		.data = (void *)VCNL4010,
 	},
 	{
 		.compatible = "vishay,vcnl4200",
-		.data = "VCNL4200",
+		.data = (void *)VCNL4200,
 	},
 	{},
 };