Memtest86+: Support MMIO serial ports

SURPRISE!!!

Martin, a gift for you!

(Thanks Alex -- Martin)

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Change-Id: Ibba200a8d6bc0831f5e9bc04db8f3ad6471711c3
Reviewed-on: https://review.coreboot.org/c/memtest86plus/+/37059
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed