dmaengine: tegra: don't open code of_device_get_match_data()

Use of_device_get_match_data() for getting matched data
instead of implementing this locally.
Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com>
Acked-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

drivers/dma/tegra20-apb-dma.c

@@ -1317,15 +1317,13 @@ static int tegra_dma_probe(struct platform_device *pdev)
 	struct tegra_dma *tdma;
 	int ret;
 	int i;
-	const struct tegra_dma_chip_data *cdata = NULL;
-	const struct of_device_id *match;
+	const struct tegra_dma_chip_data *cdata;
 
-	match = of_match_device(tegra_dma_of_match, &pdev->dev);
-	if (!match) {
-		dev_err(&pdev->dev, "Error: No device match found\n");
+	cdata = of_device_get_match_data(&pdev->dev);
+	if (!cdata) {
+		dev_err(&pdev->dev, "Error: No device match data found\n");
 		return -ENODEV;
 	}
-	cdata = match->data;
 
 	tdma = devm_kzalloc(&pdev->dev, sizeof(*tdma) + cdata->nr_channels *
 			sizeof(struct tegra_dma_channel), GFP_KERNEL);