phy: miphy28lp: Convert to devm_kcalloc and fix wrong sizof

Prefer devm_kcalloc over devm_kzalloc with multiply.
In additional, use sizeof(phy) is incorrect, fix it.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Gabriel Fernandez<gabriel.fernandez@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

drivers/phy/phy-miphy28lp.c

@@ -1209,9 +1209,8 @@ static int miphy28lp_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	miphy_dev->nphys = of_get_child_count(np);
-	miphy_dev->phys = devm_kzalloc(&pdev->dev,
-				       sizeof(phy) * miphy_dev->nphys,
-				       GFP_KERNEL);
+	miphy_dev->phys = devm_kcalloc(&pdev->dev, miphy_dev->nphys,
+				       sizeof(*miphy_dev->phys), GFP_KERNEL);
 	if (!miphy_dev->phys)
 		return -ENOMEM;