Supports --ignore-fmap argument to skip parsing fmap structure on flash.

Before, flashrom cannot continue if fmap structure is flaky (even -r).
After this CL, use --ignore-fmap to skip parsing.

Change-Id: Iff549f17abe05a2f72e2283698df0f63a75ed25d

R=dhendrix@chromium.org,reinauer@chromium.org
BUG=chrome-os-partner:2418
TEST=tested on tegra2 platform that BIOS contains broken fmap structure.

Review URL: http://codereview.chromium.org/6791005
3 files changed