amd-based mainboards: Fix whitespace in _PTS comments

Correct tabs that were intended as spaces.

Change-Id: Idcf33d829f87a866b5ed880527102918d5b93842
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/17905
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins)
57 files changed