setup.py: add missing comma in list of dependencies

Change-Id: If93d8c67cdfacc1f30307c8cfb38924fb2cbabbe
diff --git a/setup.py b/setup.py
index a02e327..e7ab1c9 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
         "pyscard",
         "serial",
         "pytlv",
-        "cmd2"
+        "cmd2",
         "jsonpath-ng"
     ],
     scripts=[