[RFC PATCH 1/2] ata_piix: revert quirks for fixing SNB chips

[Stefan Bader]

Overall the new approach looks clean. At the moment this is definitely "UBUNTU:
SAUCE:". And the BugLink statement needs to be fixed (One BugLink: key per line
followed by the link).
Also the target release is unclear (Oneiric?). Also wondering whether at least
the subject is the same as the upstream patch will be (while git likely can cope
it would make it simpler for humans to match patches).