util: Add a very simple utility to test POST cards.

It was tested with a mini-PCI POST card on a Toshiba
Satellite 1410 laptop with the stock BIOS.

Change-Id: Icdc0860e2c72b17862601c2cc59eaf0f3d8a0e54
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: https://review.coreboot.org/13763
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/util/post/README b/util/post/README
new file mode 100644
index 0000000..95b33a9
--- /dev/null
+++ b/util/post/README
@@ -0,0 +1 @@
+This is a very simple userspace utility that can be used to test POST cards.