spi: Mediatek: fixup cpu_to_le32 incorrect usage

writel() already does a cpu_to_le32 conversion, so
remove cpu_to_le32().

Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 2c41dcf..62baaad 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -359,11 +359,9 @@
 	struct mtk_spi *mdata = spi_master_get_devdata(master);
 
 	if (mdata->tx_sgl)
-		writel((__force u32)cpu_to_le32(xfer->tx_dma),
-		       mdata->base + SPI_TX_SRC_REG);
+		writel(xfer->tx_dma, mdata->base + SPI_TX_SRC_REG);
 	if (mdata->rx_sgl)
-		writel((__force u32)cpu_to_le32(xfer->rx_dma),
-		       mdata->base + SPI_RX_DST_REG);
+		writel(xfer->rx_dma, mdata->base + SPI_RX_DST_REG);
 }
 
 static int mtk_spi_fifo_transfer(struct spi_master *master,