media: cx231xx: set device_caps for 417

JIRA: https://issues.redhat.com/browse/RHEL-78934
CVE: CVE-2025-38044

commit a79efc4
Author: Hans Verkuil <hverkuil@xs4all.nl>
Date: Mon, 24 Feb 2025 14:13:24 +0100

  The video_device for the MPEG encoder did not set device_caps.

  Add this, otherwise the video device can't be registered (you get a
  WARN_ON instead).

  Not seen before since currently 417 support is disabled, but I found
  this while experimenting with it.

  Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
  Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Signed-off-by: Desnes Nunes <desnesn@redhat.com>

Author: Desnes Nunes

drivers/media/usb/cx231xx/cx231xx-417.c

@@ -1720,6 +1720,8 @@ static void cx231xx_video_dev_init(
 	vfd->lock = &dev->lock;
 	vfd->release = video_device_release_empty;
 	vfd->ctrl_handler = &dev->mpeg_ctrl_handler.hdl;
+	vfd->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |
+			   V4L2_CAP_VIDEO_CAPTURE;
 	video_set_drvdata(vfd, dev);
 	if (dev->tuner_type == TUNER_ABSENT) {
 		v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);