AGESA fam14: Comment lack of PCI-e slot resets

These boards return with AGESA_UNSUPPORTED, while other boards return
AGESA_SUCCESS here when there is no hardware for external reset signalling.

Change-Id: I5aed211b1812888af55a691cfbfa8d7b5aff91bc
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5679
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
3 files changed