Add mechanism for test-specific timeout

Adding the key 'timeout_s' to the testlist.yaml file for each test
now sets the timeout for all iterations of that test. Value in seconds.

e.g.
Set all iterations of the pmp_full_random test to have a 10s timeout.
```
- test: riscv_pmp_full_random_test
  timeout_s: 10
```

dv/uvm/core_ibex/scripts/collect_results.py

@@ -166,7 +166,7 @@ def main() -> int:
                     passing_tests.append(trr)
                 else:
                     if (trr.failure_mode == Failure_Modes.TIMEOUT):
-                        trr.failure_message = f"[FAILURE] Simulation timed-out [{md.run_rtl_timeout_s}s].\n"
+                        trr.failure_message = f"[FAILURE] Simulation timed-out [{trr.timeout_s}s].\n"
                     failing_tests.append(trr)
             except RuntimeError as e:
                 failing_tests.append(

dv/uvm/core_ibex/scripts/run_rtl.py

@@ -78,6 +78,8 @@ def _main() -> int:
         user_subst_options=subst_vars_dict)
     logger.info(sim_cmds)
 
+    trr.timeout_s = (testopts.get('timeout_s') if (testopts.get('timeout_s') is not None) else
+                     md.run_rtl_timeout_s)
     trr.dir_test.mkdir(exist_ok=True, parents=True)
     trr.rtl_cmds   = [format_to_cmd(cmd) for cmd in sim_cmds]
     trr.rtl_stdout = trr.dir_test / 'rtl_sim_stdstreams.log'
@@ -95,7 +97,7 @@ def _main() -> int:
                 sim_fd.write(f"Running run-rtl command :\n{' '.join(cmd)}\n".encode())
                 run_one(md.verbose, cmd,
                         redirect_stdstreams=sim_fd,
-                        timeout_s=md.run_rtl_timeout_s,
+                        timeout_s=trr.timeout_s,
                         reraise=True)  # Allow us to catch timeout exceptions at this level
         except subprocess.TimeoutExpired:
             trr.failure_mode = Failure_Modes.TIMEOUT

dv/uvm/core_ibex/scripts/test_run_result.py

@@ -41,6 +41,7 @@ class TestRunResult(scripts_lib.testdata_cls):
     # Message describing failure, includes a '[FAILED]: XXXX' line at the end.
     failure_mode: Optional[Failure_Modes] = None
     failure_message: Optional[str] = None
+    timeout_s: Optional[int] = None
 
     testdotseed: Optional[str] = None
     testname: Optional[str] = None        # Name of test