Changes:
- Move some information out of the SYNOPSIS section because it is formated in a broken way by mandoc(1) otherwise.
- Improve the formatting of the list of provided ioctls.
- Use "Fa" for struct fields.
- Pet mandoc and igor.
Also:
- It looks like efirt(9) is missing.
- /dev/efi does not have a description in the FILES section altough a -tags list is used.