Added ability to erase and program flash to iteflash.
BRANCH=none
BUG=chrome-os-partner:23576
TEST=generate random 192kB file, write it to the ITE chip, read flash
back and make sure file read in matches file written.
Change-Id: Id525b43e523a3d710ee65b623fec07800cf7f347
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/176022
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>