make groundtest and unitest peers of rocketchip, with their own packages, harnesses and configs

src/main/scala/coreplex/Configs.scala

@@ -11,19 +11,12 @@ import uncore.devices._
 import uncore.converters._
 import rocket._
 import rocket.Util._
+import util.ConfigUtils._
 import rocketchip.{GlobalAddrMap, NCoreplexExtClients}
-import scala.math.max
 import scala.collection.mutable.{LinkedHashSet, ListBuffer}
 import DefaultTestSuites._
 import cde.{Parameters, Config, Dump, Knob, CDEMatchError}
 
-object ConfigUtils {
-  def max_int(values: Int*): Int = {
-    values.reduce((a, b) => max(a, b))
-  }
-}
-import ConfigUtils._
-
 class BaseCoreplexConfig extends Config (
   topDefinitions = { (pname,site,here) => 
     type PF = PartialFunction[Any,Any]