Input: ad7879-spi - remove bits_per_word = 16 enforcement

Using regmap this is no longer required.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/ad7879-spi.c

@@ -34,7 +34,6 @@ static int ad7879_spi_probe(struct spi_device *spi)
 {
 	struct ad7879 *ts;
 	struct regmap *regmap;
-	int err;
 
 	/* don't exceed max specified SPI CLK frequency */
 	if (spi->max_speed_hz > MAX_SPI_FREQ_HZ) {
@@ -42,13 +41,6 @@ static int ad7879_spi_probe(struct spi_device *spi)
 		return -EINVAL;
 	}
 
-	spi->bits_per_word = 16;
-	err = spi_setup(spi);
-	if (err) {
-		dev_dbg(&spi->dev, "spi master doesn't support 16 bits/word\n");
-		return err;
-	}
-
 	regmap = devm_regmap_init_spi(spi, &ad7879_spi_regmap_config);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);