refactor uncore to split into separate packages

src/main/scala/Configs.scala

@@ -4,7 +4,10 @@ package rocketchip
 
 import Chisel._
 import junctions._
-import uncore._
+import uncore.tilelink._
+import uncore.coherence._
+import uncore.agents._
+import uncore.devices._
 import rocket._
 import rocket.Util._
 import groundtest._

src/main/scala/Fpga.scala

@@ -1,7 +1,7 @@
 package rocketchip
 
 import Chisel._
-import uncore._
+import uncore.tilelink._
 import junctions._
 import cde.Parameters
 

src/main/scala/RocketChip.scala

@@ -5,7 +5,12 @@ package rocketchip
 import Chisel._
 import cde.{Parameters, Field}
 import junctions._
-import uncore._
+import uncore.tilelink._
+import uncore.coherence._
+import uncore.agents._
+import uncore.devices._
+import uncore.util._
+import uncore.converters._
 import rocket._
 import rocket.Util._
 

src/main/scala/TestBench.scala

@@ -4,7 +4,7 @@ package rocketchip
 
 import Chisel._
 import cde.Parameters
-import uncore.{DbBusConsts, DMKey}
+import uncore.devices.{DbBusConsts, DMKey}
 
 object TestBenchGeneration extends FileSystemUtilities {
   def generateVerilogFragment(

src/main/scala/TestConfigs.scala

@@ -3,7 +3,10 @@ package rocketchip
 import Chisel._
 import groundtest._
 import rocket._
-import uncore._
+import uncore.tilelink._
+import uncore.coherence._
+import uncore.agents._
+import uncore.devices.NTiles
 import junctions._
 import scala.collection.mutable.LinkedHashSet
 import cde.{Parameters, Config, Dump, Knob, CDEMatchError}