phy: cadence: Sierra: Use correct dev pointer in cdns_sierra_phy_remove()

commit 44d30d62 ("phy: cadence: Add driver for Sierra PHY"),
incorrectly used parent device pointer to get driver data. Fix it here.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/cadence/phy-cadence-sierra.c

@@ -625,7 +625,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 
 static int cdns_sierra_phy_remove(struct platform_device *pdev)
 {
-	struct cdns_sierra_phy *phy = dev_get_drvdata(pdev->dev.parent);
+	struct cdns_sierra_phy *phy = platform_get_drvdata(pdev);
 	int i;
 
 	reset_control_assert(phy->phy_rst);