Update mill and rocket-chip (OpenXiangShan#810)

.mill-version

@@ -1 +1 @@
-0.7.4
+0.9.6

Makefile

@@ -137,7 +137,7 @@ bump:
 	git submodule foreach "git fetch origin&&git checkout master&&git reset --hard origin/master"
 
 bsp:
-	mill -i mill.contrib.BSP/install
+	mill -i mill.bsp.BSP/install
 
 .PHONY: verilog sim-verilog emu clean help init bump bsp $(REF_SO)
 

build.sc

@@ -1,26 +1,12 @@
 import os.Path
 import mill._
-import mill.modules.Util
-import $ivy.`com.lihaoyi::mill-contrib-buildinfo:$MILL_VERSION`
-import $ivy.`com.lihaoyi::mill-contrib-bsp:$MILL_VERSION`
-import mill.contrib.buildinfo.BuildInfo
 import scalalib._
-import coursier.maven.MavenRepository
-
-object CustomZincWorkerModule extends ZincWorkerModule {
-  def repositories() = super.repositories ++ Seq(
-    MavenRepository("https://maven.aliyun.com/repository/public"),
-    MavenRepository("https://maven.aliyun.com/repository/apache-snapshots")
-  )
-}
 
 trait CommonModule extends ScalaModule {
   override def scalaVersion = "2.12.10"
 
   override def scalacOptions = Seq("-Xsource:2.11")
 
-  override def zincWorker = CustomZincWorkerModule
-
   private val macroParadise = ivy"org.scalamacros:::paradise:2.1.0"
 
   override def compileIvyDeps = Agg(macroParadise)