ASoC: atmel: Remove unnecessary function call

The function platform_set_drvdata copies the value the variable
card to card->dev->driver_data, then the address of &pdev->dev is
assigned to card->dev in atmel_classd_asoc_card_init, but when
calling snd_soc_register_card,the function
dev_set_drvdata(card->dev, card) will do the same copy operation,
so i think that the former copy operation can be removed.
Signed-off-by: Peng Donglin <dolinux.peng@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/atmel/atmel-classd.c

@@ -652,7 +652,6 @@ static int atmel_classd_probe(struct platform_device *pdev)
 	}
 
 	snd_soc_card_set_drvdata(card, dd);
-	platform_set_drvdata(pdev, card);
 
 	ret = atmel_classd_asoc_card_init(dev, card);
 	if (ret) {