Disable cp_me from the L3 for Nimbus DD1 and DD2.0.

By default the L3 only sends these when the addres is non-local.
This is needed for the MCU to send early data. However MCU early
data is broken in DD1 and DD2.0 and this eats up X-link bandwidth,
so for DD1 and DD2.0 we're disabling cp_me from the L3.

Change-Id: I02eae05d75265b6e25984e620e5ea3524b03b22e
Original-Change-Id: I13a894f91434cc19f5f9502f54cc59bad9a0ae0f
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/39483
Reviewed-by: ALEXANDER M. TAFT <amtaft@us.ibm.com>
Reviewed-by: Joseph J. McGill <jmcgill@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Matt K. Light <mklight@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55497
CI-Ready: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml

@@ -2015,6 +2015,23 @@
     </chipEcFeature>
   </attribute>
   <!-- ******************************************************************** -->
+  <attribute>
+    <id>ATTR_CHIP_EC_FEATURE_DISABLE_CP_ME</id>
+    <targetType>TARGET_TYPE_PROC_CHIP</targetType>
+    <description>
+      Disable cp_me from the L3 for Nimbus DD1 and DD2.0
+    </description>
+    <chipEcFeature>
+      <chip>
+        <name>ENUM_ATTR_NAME_NIMBUS</name>
+        <ec>
+          <value>0x20</value>
+          <test>LESS_THAN_OR_EQUAL</test>
+        </ec>
+      </chip>
+    </chipEcFeature>
+  </attribute>
+  <!-- ******************************************************************** -->
   <attribute>
     <id>ATTR_CHIP_EC_FEATURE_OPTIMAL_LARX_STCX_PERF</id>
     <targetType>TARGET_TYPE_PROC_CHIP</targetType>