Change in flashrom[staging]: layout: Add -i <region>[:<file>] support.

[David Hendricks (Code Review)]

Hello Carl-Daniel Hailfinger, Philippe Mathieu-Daudé, Paul Menzel, build bot (Jenkins), Nico Huber,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/19342

to look at the new patch set (#7).

Change subject: layout: Add -i <region>[:<file>] support.
......................................................................

layout: Add -i <region>[:<file>] support.

Add an optional sub-parameter to the -i parameter to allow building the
image to be written from multiple files. This will also allow regions to
be read from flash and written to separate image files.

This is a rebase of a patch that was ported from chromiumos. A lot of
things have changed, but the idea is the same.

Original patch by Louis Yung-Chieh Lo :
Summary: Support -i partition:file feature for both read and write.
Commit: 9c7525f
Review URL: http://codereview.chromium.org/6611015

Ported version by Stefan Tauner 
and Carl-Daniel Hailfinger :
Summary: [PATCH 2/6] layout: Add -i <region>[:<file>] support.
Review URL: https://mail.coreboot.org/pipermail/flashrom/2013-October/011729.html

Change-Id: Ic5465659605d8431d931053967b40290195cfd99
Signed-off-by: David Hendricks 
Signed-off-by: Stefan Tauner 
Signed-off-by: Carl-Daniel Hailfinger 
---
M cli_classic.c
M dummyflasher.c
M flash.h
M flashrom.8.tmpl
M flashrom.c
M layout.c
M layout.h
7 files changed, 142 insertions(+), 34 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/42/19342/7