[media] exynos-gsc: change driver compatible string

As G-Scaler is going to stay unchanged across all exynos5 series
SoCs, changing the driver compatible string name to
"samsung,exynos5-gsc" from "samsung,exynos5250-gsc".
This change is as per the discussion in the devicetree forum.
http://www.mail-archive.com/devicetree-discuss@lists.ozlabs.org/msg16448.html

Signed-off-by: Shaik Ameer Basha <shaik.ameer@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/exynos-gsc/gsc-core.c

@@ -965,8 +965,10 @@ static struct platform_device_id gsc_driver_ids[] = {
 MODULE_DEVICE_TABLE(platform, gsc_driver_ids);
 
 static const struct of_device_id exynos_gsc_match[] = {
-	{ .compatible = "samsung,exynos5250-gsc",
-	.data = &gsc_v_100_drvdata, },
+	{
+		.compatible = "samsung,exynos5-gsc",
+		.data = &gsc_v_100_drvdata,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, exynos_gsc_match);