V4L/DVB (12214): bttv: set RDS capability if applicable.

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/bt8xx/bttv-driver.c

@@ -2652,6 +2652,8 @@ static int bttv_querycap(struct file *file, void  *priv,
 		V4L2_CAP_VBI_CAPTURE |
 		V4L2_CAP_READWRITE |
 		V4L2_CAP_STREAMING;
+	if (btv->has_saa6588)
+		cap->capabilities |= V4L2_CAP_RDS_CAPTURE;
 	if (no_overlay <= 0)
 		cap->capabilities |= V4L2_CAP_VIDEO_OVERLAY;