spi: omap-uwire: Use SPI_MODE_X_MASK

Use SPI_MODE_X_MASK instead of open coded variant.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210510131217.49357-5-andriy.shevchenko@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-omap-uwire.c

@@ -330,7 +330,7 @@ static int uwire_setup_transfer(struct spi_device *spi, struct spi_transfer *t)
 	if (spi->mode & SPI_CPOL)
 		flags |= UWIRE_CLK_INVERTED;
 
-	switch (spi->mode & (SPI_CPOL | SPI_CPHA)) {
+	switch (spi->mode & SPI_MODE_X_MASK) {
 	case SPI_MODE_0:
 	case SPI_MODE_3:
 		flags |= UWIRE_WRITE_FALLING_EDGE | UWIRE_READ_RISING_EDGE;