media: renesas-ceu: fix compiler warning

In function 'strncpy',
    inlined from 'ceu_notify_complete' at drivers/media/platform/renesas-ceu.c:1378:2:
include/linux/string.h:246:9: warning: '__builtin_strncpy' output truncated before terminating nul copying 11 bytes from a string of the same length [-Wstringop-truncation]
  return __builtin_strncpy(p, q, size);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Cc: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/platform/renesas-ceu.c

@@ -1375,7 +1375,7 @@ static int ceu_notify_complete(struct v4l2_async_notifier *notifier)
 		return ret;
 
 	/* Register the video device. */
-	strncpy(vdev->name, DRIVER_NAME, strlen(DRIVER_NAME));
+	strlcpy(vdev->name, DRIVER_NAME, sizeof(vdev->name));
 	vdev->v4l2_dev		= v4l2_dev;
 	vdev->lock		= &ceudev->mlock;
 	vdev->queue		= &ceudev->vb2_vq;