edid-decode: add --short/long-timings options

The --short-timings option will show all timings in short form
(1 line). The --long-timings option will show all timings in long
form (3-4 lines).

The format of the detailed timings has been revamped to make it
more understandable.

Signed-off-by: Hans Verkuil <[email protected]>
3 files changed