staging: pi433: fixed coding style issues

space required before the open parenthesis, open brace should be
on previous line.
Signed-off-by: Xiangyang Zhang <xyz.sun.ok@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/pi433/pi433_if.c

@@ -1125,8 +1125,7 @@ static int pi433_probe(struct spi_device *spi)
 	if (retval < 0)
 		return retval;
 
-	switch(retval)
-	{
+	switch (retval) {
 	case 0x24:
 		dev_dbg(&spi->dev, "found pi433 (ver. 0x%x)", retval);
 		break;