edid-decode: major cleanup

This makes the layout of the parsed EDID data consistent.

New sections start with 'Section Name:' and the following lines
are one more indent to the right.

Flags are shown as simple strings (no ':').
Values are shown as 'Value: 1234'.

Also DMTs now show the DMT ID instead of just 'DMT'.

Various new tests were also added.

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