memblock tests: change build options to run-time options

Change verbose and movable node build options to run-time options.

Movable node usage:
    $ ./main -m

    Or:
    $ ./main --movable-node

Verbose usage:
    $ ./main -v

    Or:
    $ ./main --verbose

Signed-off-by: Rebecca Mckeever <remckee0@gmail.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/20220714031717.12258-1-remckee0@gmail.com