Report mainfw_act based on VbSharedData

Don't use FDT to report it on ARM.

This fixes ARM reporting the wrong thing for RO-normal.

BUG=none
TEST=none

Change-Id: Id3a1bd2a1d2502e1d9493ab362be5a58fa88d70e
Reviewed-on: http://gerrit.chromium.org/gerrit/4213
Reviewed-by: Olof Johansson <olofj@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Randall Spangler <rspangler@chromium.org>
2 files changed