sim: options: increase max option count

sim: options: increase max option count

As we turn on more modules by default for all ports, the number of
options has been increasing.  The sim-options module has a limit on
the number of options it can support, and if it's exceeded, it likes
to go into an infinite loop.  Increase the ceiling and add an assert
so we abort right away instead of hanging.

This will be needed to turn on hw support for v850 as it will then
exceed the current limit.