Move about 50 test files related to basic layout, packing, alignment,
sections, and image structure into a pack/ subdirectory. Drop the
numeric prefixes from the filenames and update all references in
ftest.py, entry_test.py, and binman_tests.rst

Signed-off-by: Simon Glass <simon.glass@canonical.com>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>

This property sets the minimum size of an entry, including padding but
not alignment. It can be used to reserve space for growth of an entry,
or to enforce a minimum offset for later entries in the section.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

Check the contents of each section to make sure it is actually in the
right place.

Also fix a whitespace error in the .dts file.

Signed-off-by: Simon Glass <sjg@chromium.org>

We now have 99 tests. Before adding any more, rename everything to three
digits. This helps to preserve the ordering of tests and makes it easier
to find things.

Signed-off-by: Simon Glass <sjg@chromium.org>