This reverts commit c687200b.

Dropping the def association and sequence from pinconf comparing is a
bit risky, It will introduce a greater risk of catching unwanted
machines.

And in addition, so far no BIOS experts give us an explicit answer
whether it makes senses to compare these two fields or not.

For safety reason, we revert this commit.
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>