PGPE: PGPE Op Trace updates

    -Added entry/exit demarcation for core/quad changes
    -Fixed ordering of ACK/PRC trace stmt.
    -Added Unexpected errors and panic tracing

Change-Id: Ic293d2c907f4bbdc5805ab0d96a47b1582d2b27d
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/45112
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: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Juan R. Medina <jrmedina@us.ibm.com>
Reviewed-by: Michael S. Floyd <mfloyd@us.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/45578
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

src/import/chips/p9/procedures/hwp/lib/p9_pm_hcd_flags.h

@@ -181,7 +181,10 @@ enum PM_GPE_OCC_SCRATCH2_DEFS
     CME_DEBUG_TRAP_ENABLE                       = 9,
     PGPE_DEBUG_TRAP_ENABLE                      = 10,
     L3_CONTAINED_MODE                           = 11,
-    PGPE_SAFE_MODE_ERROR                        = 12
+    PGPE_SAFE_MODE_ERROR                        = 12,
+    PGPE_OP_TRACE_DISABLE                       = 24,
+    PGPE_OP_TRACE_MEM_MODE_START                = 25,
+    PGPE_OP_TRACE_MEM_MODE_LENGTH               = 2
 };
 
 //