Update XML for new Explorer levels

Signed-off-by: Zane Shelley <zshelle@us.ibm.com>
Change-Id: I2a79d0dc217241605cb798a3386d77b9aa59f33c
diff --git a/xml/explorer/node_chiplet_ocmb_fir.xml b/xml/explorer/node_chiplet_ocmb_fir.xml
index d195c84..fd6aed7 100644
--- a/xml/explorer/node_chiplet_ocmb_fir.xml
+++ b/xml/explorer/node_chiplet_ocmb_fir.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<attn_node name="CHIPLET_OCMB_FIR" model_ec="EXPLORER_10" reg_type="SCOM">
+<attn_node name="CHIPLET_OCMB_FIR" model_ec="EXPLORER_11,EXPLORER_20" reg_type="SCOM">
 
     <register name="CHIPLET_OCMB_CS_FIR">
         <instance reg_inst="0" addr="0x08040000" />