[media] media: blackfin: bfin_capture: add support for VIDIOC_EXPBUF

this patch adds support for VIDIOC_EXPBUF.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/blackfin/bfin_capture.c

@@ -763,6 +763,7 @@ static const struct v4l2_ioctl_ops bcap_ioctl_ops = {
 	.vidioc_querybuf         = vb2_ioctl_querybuf,
 	.vidioc_qbuf             = vb2_ioctl_qbuf,
 	.vidioc_dqbuf            = vb2_ioctl_dqbuf,
+	.vidioc_expbuf           = vb2_ioctl_expbuf,
 	.vidioc_streamon         = vb2_ioctl_streamon,
 	.vidioc_streamoff        = vb2_ioctl_streamoff,
 	.vidioc_g_parm           = bcap_g_parm,