Add a DDB command "show trapframe" to dump out contents of the trapframe specified by the first argument.
Add a DDB command "show trapframe" to dump out contents of the trapframe
specified by the first argument.

Approved by: imp (mentor)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase