V4L/DVB (8639): saa6752hs: cleanup and add AC-3 support

Cleaned up the saa6752hs i2c driver.
Add AC-3 support.
Add VIDIOC_CHIP_IDENT support.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h
index 41b509b..be782d5 100644
--- a/include/media/v4l2-chip-ident.h
+++ b/include/media/v4l2-chip-ident.h
@@ -72,6 +72,10 @@
 	/* module cs5345: just ident 5345 */
 	V4L2_IDENT_CS5345 = 5345,
 
+	/* module saa6752hs: reserved range 6750-6759 */
+	V4L2_IDENT_SAA6752HS = 6752,
+	V4L2_IDENT_SAA6752HS_AC3 = 6753,
+
 	/* module wm8739: just ident 8739 */
 	V4L2_IDENT_WM8739 = 8739,