This patch adds host command to write board information in EERPOM.
BUG=b:70294260
BRANCH=none
TEST=Run ectool cbi set <type> <value> to write BOARD_VERSION, OEM_ID,
and SKU_ID. Enable WP and verify cbi set command fails.
Change-Id: I39536d146313408ace666f350a107d89b331bf7a
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/865570