Automate table generation for register maps.
Based on tfcollins' vger python scripts.
There are docs/adi_regmap_*.txt with more than one regmap per file,
so the logic changed to allow that.
Using title tool as the unique identifier now.
It has a global option to set the default state (hidden or visible)
for the collpasible tables.
Also remove CSVs.
Signed-off-by: Jorge Marques <jorge.marques@analog.com>