iio: adc: ti-tsc2046: simplify with spi_get_device_match_data()

Use spi_get_device_match_data() helper to simplify a bit the driver.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240606-spi-match-data-v1-5-320b291ee1fe@linaro.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/ti-tsc2046.c

@@ -804,12 +804,7 @@ static int tsc2046_adc_probe(struct spi_device *spi)
 		return -EINVAL;
 	}
 
-	dcfg = device_get_match_data(dev);
-	if (!dcfg) {
-		const struct spi_device_id *id = spi_get_device_id(spi);
-
-		dcfg = (const struct tsc2046_adc_dcfg *)id->driver_data;
-	}
+	dcfg = spi_get_device_match_data(spi);
 	if (!dcfg)
 		return -EINVAL;