fix indent

src/main/scala/bus/simplebus/SimpleBus.scala

@@ -18,7 +18,7 @@ object SimpleBusCmd {
   def writeBurst     = "b0011".U //  write   |   refill
   def writeLast      = "b0111".U //  write   |   refill
   def probe          = "b1000".U //  read    | do nothing
-  def prefetch			 = "b0100".U //  read    |   refill
+  def prefetch       = "b0100".U //  read    |   refill
 
   // resp
   def readLast       = "b0110".U

src/main/scala/system/SoC.scala

@@ -33,8 +33,7 @@ class NOOPSoC(implicit val p: NOOPConfig) extends Module with HasSoCParameter {
   })
 
   val noop = Module(new NOOP)
-
-	val cohMg = Module(new CoherenceManager)
+  val cohMg = Module(new CoherenceManager)
   val xbar = Module(new SimpleBusCrossbarNto1(2))
   cohMg.io.in <> noop.io.imem.mem
   noop.io.dmem.coh <> cohMg.io.out.coh