mosys: Add Board config for Pit and Pi

Add Board config and change current Board config variable name

BUG=None
TEST=mosys platform version at each board
BRANCH=none

Change-Id: Ibaf8d150fce7f9d1d589996f08038f496cfdc4bb
Signed-off-by: Inki Yoo <inki.yoo@samsung.com>
Reviewed-on: https://chromium-review.googlesource.com/180834
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: Inki Yoo <inky.yoo@samsung.com>
Commit-Queue: Inki Yoo <inky.yoo@samsung.com>
4 files changed