board-status: Add README

It explains the prerequisites to run the script, some
background on how to setup the computer running the script,
and the board it gathers the information from.

That information is too long to fit inside the script's
help.

Change-Id: Iecba7310ff1583149c02728e955716775bcbbdc4
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
Reviewed-on: https://review.coreboot.org/6660
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1 file changed