JTAG: Use sorted map for stability (#1073)

* JTAG: Use sorted map for stability

Otherwise the generated FIRRTL/Verilog is non deterministic

* jtag : parens for clarity

* jtag: Use deterministic ListMap and sort for stability

* JTAG: use slightly clearer SortedMap (clearer to me anyway)

* jtag: whitespace cleanup

src/main/scala/devices/debug/DebugTransport.scala

@@ -243,7 +243,8 @@ class DebugTransportModuleJTAG(debugAddrBits: Int, c: JtagDTMConfig)
   idcode.mfrId      := io.jtag_mfr_id
 
   val tapIO = JtagTapGenerator(irLength = 5,
-    instructions = Map(dtmJTAGAddrs.DMI_ACCESS -> dmiAccessChain,
+    instructions = Map(
+      dtmJTAGAddrs.DMI_ACCESS -> dmiAccessChain,
       dtmJTAGAddrs.DTM_INFO   -> dtmInfoChain),
     icode = Some(dtmJTAGAddrs.IDCODE)
   )