vboot: replace Min macro with VB2_MIN

Replace old vboot1-style Min macro with VB2_MIN,
and relocate tests accordingly.

BUG=b:124141368
TEST=make clean && make runtests
BRANCH=none

Change-Id: I73d630147eaf23f97dd750769fb1e911dae01848
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1675866
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
8 files changed