pinctrl: lynxpoint: Use standard pattern for memory allocation

The pattern
	foo = kmalloc(sizeof(*foo), GFP_KERNEL);
has an advantage when foo type is changed. Since we are planning a such,
better to be prepared by using standard pattern for memory allocation.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/pinctrl/intel/pinctrl-lynxpoint.c

@@ -327,7 +327,7 @@ static int lp_gpio_probe(struct platform_device *pdev)
 	unsigned long reg_len;
 	int ret;
 
-	lg = devm_kzalloc(dev, sizeof(struct lp_gpio), GFP_KERNEL);
+	lg = devm_kzalloc(dev, sizeof(*lg), GFP_KERNEL);
 	if (!lg)
 		return -ENOMEM;