iio: light: vcnl4000 use word writes instead of byte writes

The VCNL4200 datasheet says that word read and writes should be used
to access the registers.
Signed-off-by: NAngus Ainslie (Purism) <angus@akkea.ca>
Tested-by: NTomas Novotny <tomas@novotny.cz>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/light/vcnl4000.c

@@ -140,10 +140,10 @@ static int vcnl4200_init(struct vcnl4000_data *data)
 	data->rev = (ret >> 8) & 0xf;
 
 	/* Set defaults and enable both channels */
-	ret = i2c_smbus_write_byte_data(data->client, VCNL4200_AL_CONF, 0x00);
+	ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, 0);
 	if (ret < 0)
 		return ret;
-	ret = i2c_smbus_write_byte_data(data->client, VCNL4200_PS_CONF1, 0x00);
+	ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, 0);
 	if (ret < 0)
 		return ret;