AGESA boards: Rename files containing OEM configuration

There are other things besides PCIe port configuration that
require board specific hooks.

Change-Id: I0923651487b9ed5f6f7569ce08e02d993fa5f976
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/14527
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
53 files changed