[PATCH 0/2] xmon io space read

[Jake Moilanen]

These patches allow xmon to read from ioremapped IO space.  

It uses a command very similar to the normal memory read.  I elected to
not reuse the memory read code because I wanted some extra "security"
to help prevent an inadvertent destructive read.

I had to also add a debugger_fault_handler() in bad_page_fault() to
catch an illegal attempt at hashing a bad page via a hcall.

Patch 1/2: Fix for in_be64()

Patch 2/2: xmon code to read from io space.

Thanks,
Jake