[media] exynos-gsc: Use of_device_get_match_data() helper

#include <linux/slab.h>

#include <linux/clk.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <media/v4l2-ioctl.h>

#include "gsc-core.h"

};

MODULE_DEVICE_TABLE(of, exynos_gsc_match);

static void *gsc_get_drv_data(struct platform_device *pdev)

{

	struct gsc_driverdata *driver_data = NULL;

	const struct of_device_id *match;

	match = of_match_node(exynos_gsc_match, pdev->dev.of_node);

	if (match)

		driver_data = (struct gsc_driverdata *)match->data;

	return driver_data;

}

static int gsc_probe(struct platform_device *pdev)

{

	struct gsc_dev *gsc;

	struct resource *res;

	struct gsc_driverdata *drv_data = gsc_get_drv_data(pdev);

	struct device *dev = &pdev->dev;

	const struct gsc_driverdata *drv_data = of_device_get_match_data(dev);

	int ret;

	gsc = devm_kzalloc(dev, sizeof(struct gsc_dev), GFP_KERNEL);