mfd: atmel: Use devm_of_platform_populate()

Use devm_of_platform_populate() to be sure that of_platform_depopulate
is called when removing the driver.
Signed-off-by: NBenjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

drivers/mfd/atmel-flexcom.c

@@ -80,7 +80,7 @@ static int atmel_flexcom_probe(struct platform_device *pdev)
 
 	clk_disable_unprepare(clk);
 
-	return of_platform_populate(np, NULL, NULL, &pdev->dev);
+	return devm_of_platform_populate(&pdev->dev);
 }
 
 static const struct of_device_id atmel_flexcom_of_match[] = {