spi: fsl: Combine substrings for two messages

The script "checkpatch.pl" pointed information out like the following.

WARNING: quoted string split across lines

Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-fsl-spi.c

@@ -267,10 +267,9 @@ static int fsl_spi_setup_transfer(struct spi_device *spi,
 	if ((mpc8xxx_spi->spibrg / hz) > 64) {
 		cs->hw_mode |= SPMODE_DIV16;
 		pm = (mpc8xxx_spi->spibrg - 1) / (hz * 64) + 1;
-
-		WARN_ONCE(pm > 16, "%s: Requested speed is too low: %d Hz. "
-			  "Will use %d Hz instead.\n", dev_name(&spi->dev),
-			  hz, mpc8xxx_spi->spibrg / 1024);
+		WARN_ONCE(pm > 16,
+			  "%s: Requested speed is too low: %d Hz. Will use %d Hz instead.\n",
+			  dev_name(&spi->dev), hz, mpc8xxx_spi->spibrg / 1024);
 		if (pm > 16)
 			pm = 16;
 	} else {
@@ -763,8 +762,9 @@ static int of_fsl_spi_get_chipselects(struct device *dev)
 		ret = gpio_direction_output(pinfo->gpios[i],
 					    pinfo->alow_flags[i]);
 		if (ret) {
-			dev_err(dev, "can't set output direction for gpio "
-				"#%d: %d\n", i, ret);
+			dev_err(dev,
+				"can't set output direction for gpio #%d: %d\n",
+				i, ret);
 			goto err_loop;
 		}
 	}