spi: coldfire-qspi: Simplify the code to set register bits for transfer speed

spi core will use spi->max_speed_hz as transfer speed if the transfer speed was
not set. So we don't need to test t->speed_hz in mcfqspi_transfer_one().

Signed-off-by: Axel Lin <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-coldfire-qspi.c

···
 		qmr |= MCFQSPI_QMR_CPHA;
 	if (spi->mode & SPI_CPOL)
 		qmr |= MCFQSPI_QMR_CPOL;
-	if (t->speed_hz)
-		qmr |= mcfqspi_qmr_baud(t->speed_hz);
-	else
-		qmr |= mcfqspi_qmr_baud(spi->max_speed_hz);
+	qmr |= mcfqspi_qmr_baud(t->speed_hz);
 	mcfqspi_wr_qmr(mcfqspi, qmr);
 
 	mcfqspi_wr_qir(mcfqspi, MCFQSPI_QIR_SPIFE);