Add traceprocessing steps for PC trace comparisons

Documenting sed/awk/grep one-liners for extracting PC trace from
Spike/Renode in a format that can be directly diff-ed with the SystemC
trace.dat for the same elf file.

Change-Id: Ib9e527c0049a6e7d5d33433cc30a42bf9b0a7b26
1 file changed