docs: reporting-issues.rst: duplicate sections for reviewing purposes

This duplicates two section to make the diff in the next patch a bit
easier to gasp for humans.

Straight copy, no content changes.
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Link: https://lore.kernel.org/r/ef85edc8466f035eb243dd6629429ad4fd0565d8.1616181657.git.linux@leemhuis.infoSigned-off-by: Jonathan Corbet <corbet@lwn.net>