Trace out fapirc in istep failure case

Change-Id: Ic65ca16dbdf65b4aba71c012df559880d9cae29f
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/42449
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

src/sbefw/sbecmdiplcontrol.C

@@ -523,6 +523,7 @@ ReturnCode sbeExecuteIstep (const uint8_t i_major, const uint8_t i_minor)
 
     if(rc != FAPI2_RC_SUCCESS)
     {
+        SBE_ERROR( SBE_FUNC" FAPI RC:0x%08X", rc);
         (void)SbeRegAccess::theSbeRegAccess().stateTransition(
                                                     SBE_DUMP_FAILURE_EVENT);
     }