Change in flashrom[staging]: Add option to read ROM layout from IFD

[Nico Huber (Code Review)]

Hello David Hendricks, build bot (Jenkins),

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

https://review.coreboot.org/17953

to look at the new patch set (#13).

Change subject: Add option to read ROM layout from IFD
......................................................................

Add option to read ROM layout from IFD

Add an option --ifd to read the ROM layout from an Intel Firmware
Descriptor (IFD). Works the same as the -l option, if given, -i
specifies the images to update.

v2: o Rebased on libflashrom, use libflashrom interface.
    o Use functions from ich_descriptors.c.

v3: o Move ich_descriptors.o to LIB_OBJS, thus build it independent
      of arch and programmers.
    o Bail out if we aren't compiled for little endian.
    o Update flashrom.8.tmpl.

v4: o Incorporated David's comments.
    o Removed single-character `-d` option.

Change-Id: Ifafff2bf6d5c5e62283416b3269723f81fdc0fa3
Signed-off-by: Nico Huber 
---
M Makefile
M cli_classic.c
M flash.h
M flashrom.8.tmpl
M flashrom.c
M ich_descriptors.c
M ich_descriptors.h
M layout.c
M layout.h
M libflashrom.c
M libflashrom.h
11 files changed, 200 insertions(+), 24 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/53/17953/13