PEL: Add power-sequencer registry entries

Make changes necessary to create PEL entries for errors issued by the
power-sequencer application.

Signed-off-by: Jim Wright <jlwright@us.ibm.com>
Change-Id: I36f9caaa44e3fb9e6116c59e267eadc406116d58
diff --git a/extensions/openpower-pels/registry/schema/schema.json b/extensions/openpower-pels/registry/schema/schema.json
index e122db4..89530b4 100644
--- a/extensions/openpower-pels/registry/schema/schema.json
+++ b/extensions/openpower-pels/registry/schema/schema.json
@@ -438,7 +438,7 @@
         {
             "description": "The symbolic FRU callout.",
             "type": "string",
-            "enum": ["service_docs", "pwrsply", "air_mover"]
+            "enum": ["service_docs", "pwrsply", "air_mover", "pgood_part", "usb_pgood"]
         },
 
         "symbolicFRUTrusted":
@@ -612,7 +612,6 @@
                 "required": ["ADValue", "Callouts"]
             },
             "minItems": 1,
-            "maxItems": 10,
 
             "examples":
             [