Update P10 chip data XML

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: Ia864d6b7cb6bea6f245c0794687b0d32f2a3691c
diff --git a/test/simulator/simulator.hpp b/test/simulator/simulator.hpp
index c308fda..f96109a 100644
--- a/test/simulator/simulator.hpp
+++ b/test/simulator/simulator.hpp
@@ -47,6 +47,7 @@
         EXPLORER_11 = 0x60d20011,
         EXPLORER_20 = 0x60d20020,
         P10_10      = 0x20da0010,
+        P10_20      = 0x20da0020,
     };
 
   private: