Post-increment load/store in trace parser script

[sermazz]

Posting here as a to-do.
The trace parser script implicitly assumes that all load and store instructions do not use post-increment addressing.
https://github.com/pulp-platform/mempool/blob/main/hardware/scripts/gen_trace.py#L189-L199
extras['alu_result'] is always printed as accessed address, but Reg[rs1] is the actually accessed address when post-increment is used.
To fix:

• also trace i_snitch.is_postincr in the tracer in mempool_cc
• enhance the lines above of the tracer script to change the printed memory address of post-increment instructions