[media] v4l2-dv-timings.h: definitions for CEA-861 and VESA DMT timings

This header contains the timings for the common CEA-861 and all VESA
DMT formats for use with the V4L2 dv_timings API.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>