auron*: Add mosys platform version support

Check the SMBIOS table for mainboard version.

BUG=chrome-os-partner:39245
BRANCH=none
TEST=mosys platform version matches dmidecode mainboard version string.

Change-Id: I6772321005cd6756475cd2cc93128934f2fb8c0c
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: https://chromium-review.googlesource.com/266392
Reviewed-by: Shawn N <shawnn@chromium.org>
(cherry picked from commit 283f65c12a44696eed391abdc4b389b28adb2ea7)
Reviewed-on: https://chromium-review.googlesource.com/267640
Reviewed-by: David Hendricks <dhendrix@chromium.org>
1 file changed