This patch adds the mainboard.c in order to support the sku id in smbios
table where the sku id is queried from the eeprom via EC.
BUG=b:113714761
BRANCH=master
TEST=check the result of 'dmidecode'
Change-Id: I3413784cca1ac10a2468d84f2d06c0e1d701fdcb
Signed-off-by: Zhuohao Lee <zhuohao@chromium.org>
Reviewed-on: https://review.coreboot.org/28426
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>