memtest86+: Add support for serial ports 2 & 3

This is from a patch that was posted in the memtest86+ forum:

From: Maxime de Roucy <maxime.deroucy@gmail.com>
Date: Thu, 27 Aug 2015 23:55:47 +0200
Subject: [PATCH 5/8] add support for serial port 2 & 3

Change-Id: I738e2bb8da2a990f26c390afd7d193d3d2fdc9b3
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/13898
Tested-by: build bot (Jenkins)
Reviewed-by: Ben Gardner <gardner.ben@gmail.com>
2 files changed