cam: Fix wiring fence post error

[imp]

Summary

If the last matching device entry partially matched in camperiphunit,
but then hit a continue case, we'd mistakenly think we had a match on
that entry. This lead to a number of problems downstream (usually a
belief that we had a duplicate wiring hint because unit = 0 is the
default). Fix this by branching to the bottom of the loop to set wired
to false rather than relying on 'continue' to set that as a side effect.

Sponsored by: Netflix

[imp]

sys/cam/cam_periph.c

558

and here's where we mistakenly think we have a duplicate

649

This is the use of the 'wired' that is incorrect as a result of this bug...

[jhb]

sys/cam/cam_periph.c

613–616

You could perhaps keep using continue if you wanted by making this a for-loop instead:

for (wired = false; resource_find_dev(...) == 0; wired = false) {

[imp]

I like John's suggestion