dd1 workaround for hw400075 coherency error

Change-Id: I13ea2522aff1b9a33a3a9d8b6c9eeeb62dced822
Original-Change-Id: I09ba40e8b92f7800a4843ff562cea3fbb75383c5
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/35235
Tested-by: Jenkins Server <pfd-jenkins+hostboot@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: LUKE MURRAY <murrayl@us.ibm.com>
Reviewed-by: Brian R. Silver <bsilver@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55457
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

@@ -2008,6 +2008,23 @@
     </chipEcFeature>
   </attribute>
 
+  <attribute>
+    <id>ATTR_CHIP_EC_FEATURE_HW40075</id>
+    <targetType>TARGET_TYPE_PROC_CHIP</targetType>
+    <description>
+      Addresses issue where MDI bit was getting wrong values with threadmill and transactional data resulting in coherency issues.
+    </description>
+    <chipEcFeature>
+      <chip>
+        <name>ENUM_ATTR_NAME_NIMBUS</name>
+        <ec>
+          <value>0x20</value>
+          <test>LESS_THAN</test>
+        </ec>
+      </chip>
+    </chipEcFeature>
+  </attribute>
+
   <attribute>
     <id>ATTR_CHIP_EC_FEATURE_MSS_TRAINING_BAD_BITS</id>
     <targetType>TARGET_TYPE_PROC_CHIP</targetType>