Update WOF errl parser to allow for padding

Noticed padding to 4-byte boundaries which
throws off this error log parsing.
Parsing updated to just output the expected entries
and ignore the additional padding.

Change-Id: I238a1466919005069a36cc9c61b3d3f5f7b02278
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/69405
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Reviewed-by: Roland Veloz <rveloz@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/usr/errl/plugins/errludwofdata.H

@@ -118,10 +118,9 @@ public:
           tableEntries = actualTableCount;  // don't go over buffer length
         }
 
-        // Check that the remaining data breaks down into parsable
-        // wofTableCompareData_t entries
-        if ( (i_buflen - sizeof(tableEntries))
-              % sizeof(wofTableCompareData_t) == 0 )
+        // Verify the buffer contains at least the specified number of entries
+        if ( (i_buflen - sizeof(tableEntries) -
+              tableEntries * sizeof(wofTableCompareData_t)) >= 0 )
         {
             i_parser.PrintString("---------------------------------------",
                                  "---------------------------------------");
@@ -185,7 +184,9 @@ public:
         }
         else
         {
+            i_parser.PrintString("Unable to parse too small buffer","");
             i_parser.PrintNumber("WOF Buffer length", "0x%X", i_buflen);
+            i_parser.PrintNumber("Total entry count", "0x%X", tableEntries);
             i_parser.PrintString("Expected buffer format:",
                         "uint16_t count, match this entry, unmatched entries");
             i_parser.PrintNumber("Each entry size", "%d",