Add Axone comment to grouping attribute

Pointing out the use of MCC for grouping attribute

Change-Id: I5dbd03d18ca4e9d0d6b638d8458c365809f5e68f
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/79460
Reviewed-by: STEPHEN GLANCY <sglancy@us.ibm.com>
Reviewed-by: Louis Stermole <stermole@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
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>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Reviewed-by: Benjamin Gass <bgass@us.ibm.com>
Reviewed-by: Jennifer A Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/79499
Reviewed-by: RAJA DAS <rajadas2@in.ibm.com>

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

@@ -1106,11 +1106,11 @@
       An 8 bit vector that would be a designation of which MC (Nimbus MCA or
       Cumulus MI) are involved in the group.
       So the bits would represent
-                  Nimbus   Cumulus
-        Bit 0     MCA0     MI0
-        Bit 1     MCA1     MI1
+                  Nimbus   Cumulus   Axone
+        Bit 0     MCA0     MI0       MCC0
+        Bit 1     MCA1     MI1       MCC1
         .....
-        Bit 7     MCA7     MI7
+        Bit 7     MCA7     MI7       MCC7
       Set by p9_mss_eff_grouping
     </description>
     <valueType>uint8</valueType>