crypto: picoxcell - Use dev_get_drvdata()

Using dev_get_drvdata directly.

Cc: Jamie Iles <jamie@jamieiles.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/picoxcell_crypto.c

@@ -1215,7 +1215,7 @@ static const struct dev_pm_ops spacc_pm_ops = {
 
 static inline struct spacc_engine *spacc_dev_to_engine(struct device *dev)
 {
-	return dev ? platform_get_drvdata(to_platform_device(dev)) : NULL;
+	return dev ? dev_get_drvdata(dev) : NULL;
 }
 
 static ssize_t spacc_stat_irq_thresh_show(struct device *dev,