TP, Nest FIR updates -- DD2 updates to match RAS XML

TP Pervasive LFIR
  - mark bit 21 recoverable to match XML specification
  - add Nimbus-only workaround for XBUS PLL lock reporting
  - adjust MEM PLL reset,setup routines to avoid generating spurious attention
    from MEM PLL

FBC IOE TL FIR
  - mask bits 9,12,15 to match XML specification
  - mark bits 56..58 checkstop to match XML specification

FBC IOO DL FIR
  - mask bits 56..59, 62..63 to match XML specification
  - mark bits 60..61 recoverable to match XML specification

IO OBUS FIR
  - mark bit 2 recoverable to match XML specification

CXA FIR
  - update initfile to handle change in number of implemented bits from
    Nimbus DD1 to DD2

NX CQ FIR
  - mark bits 6,16,20..21,23..24,28,39 checkstop to match XML specification
  - mark bit 11 recoverable to match XML specification changes

Change-Id: Ic2bdf913ef98b6ad1ae6b94fe1e8a2ae8dacad70
Original-Change-Id: Ic954b2281d1d86ad91e7cd4952923af8c0fa0d8b
CQ: HW415692
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/42905
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Matt K. Light <mklight@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55552
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

@@ -3606,6 +3606,23 @@
     </chipEcFeature>
   </attribute>
 
+  <attribute>
+    <id>ATTR_CHIP_EC_FEATURE_HW415692</id>
+    <targetType>TARGET_TYPE_PROC_CHIP</targetType>
+    <description>
+      Nimbus DD[12] -- XB PLL lock reporting is unreliable
+      based on unused x0 instance
+    </description>
+    <chipEcFeature>
+      <chip>
+        <name>ENUM_ATTR_NAME_NIMBUS</name>
+        <ec>
+          <value>0x21</value>
+          <test>LESS_THAN_OR_EQUAL</test>
+        </ec>
+      </chip>
+    </chipEcFeature>
+  </attribute>
 
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   <!-- Memory Section                                                       -->