spi-imx: no need to assert bits_per_word being initialized

spi_imx_setup() is only called by spi_setup().  The latter does the
initialization already.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/spi/spi_imx.c

@@ -481,9 +481,6 @@ static int spi_imx_setup(struct spi_device *spi)
 	struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master);
 	int gpio = spi_imx->chipselect[spi->chip_select];
 
-	if (!spi->bits_per_word)
-		spi->bits_per_word = 8;
-
 	pr_debug("%s: mode %d, %u bpw, %d hz\n", __func__,
 		 spi->mode, spi->bits_per_word, spi->max_speed_hz);