[media] saa7134: store VBI hlen/vlen globally

Don't calculate this for every buffer, store it globally instead.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/drivers/media/pci/saa7134/saa7134.h b/drivers/media/pci/saa7134/saa7134.h
index 419f5f8..907568e 100644
--- a/drivers/media/pci/saa7134/saa7134.h
+++ b/drivers/media/pci/saa7134/saa7134.h
@@ -600,6 +600,7 @@
 	unsigned int               vbi_fieldcount;
 	struct saa7134_format      *fmt;
 	unsigned int               width, height;
+	unsigned int               vbi_hlen, vbi_vlen;
 	struct pm_qos_request	   qos_request;
 
 	/* various v4l controls */