[media] v4l2-dv-timings: export the timings list

Some drivers need to be able to access the full list of timings.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h
index 43f6b67..0fe310b 100644
--- a/include/media/v4l2-dv-timings.h
+++ b/include/media/v4l2-dv-timings.h
@@ -23,6 +23,10 @@
 
 #include <linux/videodev2.h>
 
+/** v4l2_dv_timings_presets: list of all dv_timings presets.
+ */
+extern const struct v4l2_dv_timings v4l2_dv_timings_presets[];
+
 /** v4l2_dv_valid_timings() - are these timings valid?
   * @t:	  the v4l2_dv_timings struct.
   * @cap: the v4l2_dv_timings_cap capabilities.