twister: support xt-sim as a runnable target

Use xt-sim to run Xtensa simulator in twister.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

Author: nashif

scripts/pylib/twister/twisterlib.py

@@ -1977,7 +1977,7 @@ def check_runnable(self, enable_slow=False, filter='buildable', fixtures=[]):
 
         target_ready = bool(self.testcase.type == "unit" or \
                         self.platform.type == "native" or \
-                        self.platform.simulation in ["mdb-nsim", "nsim", "renode", "qemu", "tsim", "armfvp"] or \
+                        self.platform.simulation in ["mdb-nsim", "nsim", "renode", "qemu", "tsim", "armfvp", "xt-sim"] or \
                         filter == 'runnable')
 
         if self.platform.simulation == "nsim":
@@ -2442,6 +2442,9 @@ def setup_handler(self):
         elif instance.platform.simulation == "armfvp":
             instance.handler = BinaryHandler(instance, "armfvp")
             instance.handler.call_make_run = True
+        elif instance.platform.simulation == "xt-sim":
+            instance.handler = BinaryHandler(instance, "xt-sim")
+            instance.handler.call_make_run = True
 
         if instance.handler:
             instance.handler.args = args