spi: spi-ti-qspi: Use dma_engine wrapper for dma memcpy call

Instead of calling device_prep_dma_memcpy() directly with dma_device
pointer, use the newly introduced dmaengine_prep_dma_memcpy() wrapper
API.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-ti-qspi.c

@@ -401,8 +401,7 @@ static int ti_qspi_dma_xfer(struct ti_qspi *qspi, dma_addr_t dma_dst,
 	struct dma_async_tx_descriptor *tx;
 	int ret;
 
-	tx = dma_dev->device_prep_dma_memcpy(chan, dma_dst, dma_src,
-					     len, flags);
+	tx = dmaengine_prep_dma_memcpy(chan, dma_dst, dma_src, len, flags);
 	if (!tx) {
 		dev_err(qspi->dev, "device_prep_dma_memcpy error\n");
 		return -EIO;