scripts/analyse-locks-simpletrace.py: changed iteritems() to items()

Python 3 removed `dict.iteritems()` in favor of `dict.items()`. This
means the script currently doesn't work on Python 3.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Mads Ynddal <m.ynddal@samsung.com>
Message-id: 20230926103436.25700-15-mads@ynddal.dk
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

scripts/analyse-locks-simpletrace.py

@@ -75,7 +75,7 @@ if __name__ == '__main__':
            (analyser.locks, analyser.locked, analyser.unlocks))
 
     # Now dump the individual lock stats
-    for key, val in sorted(analyser.mutex_records.iteritems(),
+    for key, val in sorted(analyser.mutex_records.items(),
                            key=lambda k_v: k_v[1]["locks"]):
         print ("Lock: %#x locks: %d, locked: %d, unlocked: %d" %
                (key, val["locks"], val["locked"], val["unlocked"]))