Update P10 chip data XML

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: Ia864d6b7cb6bea6f245c0794687b0d32f2a3691c
diff --git a/xml/p10/node_pau_fir_1.xml b/xml/p10/node_pau_fir_1.xml
index cacea0e..e8b9718 100644
--- a/xml/p10/node_pau_fir_1.xml
+++ b/xml/p10/node_pau_fir_1.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<attn_node model_ec="P10_10" name="PAU_FIR_1" reg_type="SCOM">
+<attn_node model_ec="P10_10,P10_20" name="PAU_FIR_1" reg_type="SCOM">
     <local_fir config="" name="PAU_FIR_1">
         <instance addr="0x10010C40" reg_inst="0"/>
         <instance addr="0x11010C40" reg_inst="3"/>