[media] m2m-deinterlace: Add V4L2_CAP_VIDEO_M2M capability flag

New mem-to-mem video drivers should use V4L2_CAP_VIDEO_M2M capability, rather
than ORed V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags, as outlined
in commit a1367f1b260d29e9b9fb20d8e2f39f1e74fa6c3b.

Acked-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/platform/m2m-deinterlace.c

@@ -456,8 +456,13 @@ static int vidioc_querycap(struct file *file, void *priv,
 	strlcpy(cap->driver, MEM2MEM_NAME, sizeof(cap->driver));
 	strlcpy(cap->card, MEM2MEM_NAME, sizeof(cap->card));
 	strlcpy(cap->bus_info, MEM2MEM_NAME, sizeof(cap->card));
-	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
-			  | V4L2_CAP_STREAMING;
+	/*
+	 * This is only a mem-to-mem video device. The capture and output
+	 * device capability flags are left only for backward compatibility
+	 * and are scheduled for removal.
+	 */
+	cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT |
+			   V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
 	cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
 
 	return 0;