[media] exynos-gsc: Fix checkpatch warning in gsc-m2m.c

Fixes the following warning:
WARNING: space prohibited between function name and open parenthesis '('
FILE: media/platform/exynos-gsc/gsc-m2m.c:606:
	ctx = kzalloc(sizeof (*ctx), GFP_KERNEL);

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/platform/exynos-gsc/gsc-m2m.c b/drivers/media/platform/exynos-gsc/gsc-m2m.c
index a8e5050..0d06d6c 100644
--- a/drivers/media/platform/exynos-gsc/gsc-m2m.c
+++ b/drivers/media/platform/exynos-gsc/gsc-m2m.c
@@ -603,7 +603,7 @@
 	if (mutex_lock_interruptible(&gsc->lock))
 		return -ERESTARTSYS;
 
-	ctx = kzalloc(sizeof (*ctx), GFP_KERNEL);
+	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 	if (!ctx) {
 		ret = -ENOMEM;
 		goto unlock;