memtest86+: fix serial console keyboard input

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

From: Maxime de Roucy <maxime.deroucy@gmail.com>
Date: Sun, 27 Sep 2015 15:26:29 +0200
Subject: [PATCH 6/8] fix serial console keyboard input

"Without this patch you can't send keyboard command (ESC, c, SC, SP…)
through the serial console."

Change-Id: I834d125e30e06d0d312631d52caa1a629373dc40
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/13899
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed