fix D$ trace replay generator signed op mismatch bug
fix D$ trace replay generator signed op mismatch bug


Former-commit-id: eefe65730d48d3233fae2faf5c98c4d9f5684f21
litex-hub/pythondata-cpu-blackparrot,litex-hub/pythondata-cpu-blackparrot,litex-hub/pythondata-cpu-blackparrot