pinctrl/nomadik/abx500: Improve a size determination in abx500_gpio_probe()

Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/nomadik/pinctrl-abx500.c

@@ -1155,8 +1155,7 @@ static int abx500_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	pct = devm_kzalloc(&pdev->dev, sizeof(struct abx500_pinctrl),
-				   GFP_KERNEL);
+	pct = devm_kzalloc(&pdev->dev, sizeof(*pct), GFP_KERNEL);
 	if (!pct)
 		return -ENOMEM;