[media] s5p-mfc: Set last buffer flag

Setting the last buffer flag causes the videobuf2 core to return -EPIPE from
DQBUF calls on the capture queue after the last buffer is dequeued.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/s5p-mfc/s5p_mfc.c

@@ -211,6 +211,7 @@ static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx)
 			dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE;
 		else
 			dst_buf->b->v4l2_buf.field = V4L2_FIELD_INTERLACED;
+		dst_buf->b->v4l2_buf.flags |= V4L2_BUF_FLAG_LAST;
 
 		ctx->dec_dst_flag &= ~(1 << dst_buf->b->v4l2_buf.index);
 		vb2_buffer_done(dst_buf->b, VB2_BUF_STATE_DONE);