arc: print human-readable exception info

Right now only numerical values are printed which must
be looked up in the Designware ARCv2 ISA Programmer's
Reference, which is not public.

Add a non-default Kconfig to print more information at
the expense of footprint, and enable it for all the simulator
targets.

We only print code/parameter details for machine check and
protection violations, more may be added later as desired.
This should cover all the exceptions we commonly encounter
for memory protection.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>