spi: cadence-quadspi: fix dma_unmap_single() call

There are separate constants for the dma-mapping API and the dmaengine
API, mixing them up causes a warning in some builds:

In file included from drivers/spi/spi-cadence-quadspi.c:12:
drivers/spi/spi-cadence-quadspi.c: In function 'cqspi_versal_indirect_read_dma':
drivers/spi/spi-cadence-quadspi.c:950:55: error: implicit conversion from 'enum dma_transfer_direction' to 'enum dma_data_direction' [-Werror=enum-conversion]
  950 |         dma_unmap_single(dev, dma_addr, bytes_to_dma, DMA_DEV_TO_MEM);
      |                                                       ^~~~~~~~~~~~~~
include/linux/dma-mapping.h:407:70: note: in definition of macro 'dma_unmap_single'
  407 | #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, 0)
      |                                                                      ^

Fixes: 1a6f854f ("spi: cadence-quadspi: Add Xilinx Versal external DMA support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211013144600.2378037-1-arnd@kernel.orgSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-cadence-quadspi.c

@@ -947,7 +947,7 @@ static int cqspi_versal_indirect_read_dma(struct cqspi_flash_pdata *f_pdata,
 	writel(CQSPI_REG_INDIRECTWR_CANCEL_MASK,
 	       reg_base + CQSPI_REG_INDIRECTRD);
 
-	dma_unmap_single(dev, dma_addr, bytes_to_dma, DMA_DEV_TO_MEM);
+	dma_unmap_single(dev, dma_addr, bytes_to_dma, DMA_FROM_DEVICE);
 
 	reg = readl(cqspi->iobase + CQSPI_REG_CONFIG);
 	reg &= ~CQSPI_REG_CONFIG_DMA_MASK;