Change in flashrom[master]: Add support to get layout from fmap (e.g. coreboot rom)

[David Hendricks (Code Review)]

David Hendricks has uploaded a new patch set (#18) to the change originally created by Arthur Heymans. ( https://review.coreboot.org/23203 )

Change subject: Add support to get layout from fmap (e.g. coreboot rom)
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Add support to get layout from fmap (e.g. coreboot rom)

Flashmap, or simply fmap, is a binary data format for describing
region offsets, sizes, and certain attributes and is widely used by
coreboot. This patch adds support for the fmap data format along with
--fmap and --fmap-file arguments.

Using --fmap will make flashrom to search the ROM content for fmap
data. Using --fmap-file will make flashrom search a supplied file
for fmap data.

An example of how to update the COREBOOT region of a ROM:
flashrom -p programmer --fmap -w coreboot.rom -i COREBOOT
flashrom -p programmer --fmap-file coreboot.rom -w coreboot.rom -i COREBOOT

The fmap functions are mostly copied from cbfstool.

Currently it is made mutually exclusive with --ifd while still
allowing --layout until we are more clever about this input.

Change-Id: I0e7fad38ed79a84d41358e1f175c36d255786c12
Signed-off-by: Arthur Heymans 
Signed-off-by: David Hendricks 
---
M Makefile
M cli_classic.c
M flashrom.8.tmpl
A fmap.c
A fmap.h
M libflashrom.c
M libflashrom.h
7 files changed, 549 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/03/23203/18