Change default stateful partition size from 1GB to 1.4GB

A larger stateful is needed for this factory build.

BUG=None
TEST=build image and verify stateful size

Change-Id: I447d30b2bd284afd3da81f3f8b4dcf9d8bf8da45
Reviewed-on: https://gerrit.chromium.org/gerrit/62371
Commit-Queue: Katie Roberts-Hoffman <katierh@chromium.org>
Reviewed-by: Katie Roberts-Hoffman <katierh@chromium.org>
Tested-by: Katie Roberts-Hoffman <katierh@chromium.org>
1 file changed