LinkLayer: During reset RXLINKACTIVEACK must be deasserted

During reset the following interface signals must be deasserted by the
component:

* TX***LCRDV
* TX***FLITV
* TXLINKACTIVEREQ and RXLINKACTIVEACK

The earliest point after reset that it is permitted to begin driving
these signals HIGH is at a rising CLK edge after RESETn is HIGH.

src/main/scala/coupledL2/tl2chi/chi/LinkLayer.scala

@@ -300,7 +300,7 @@ class LinkMonitor(implicit p: Parameters) extends L2Module with HasCHIMsgParamet
 
   io.out.txsactive := true.B
   io.out.tx.linkactivereq := !reset.asBool
-  io.out.rx.linkactiveack := RegNext(io.out.rx.linkactivereq) || !rxDeact
+  io.out.rx.linkactiveack := (RegNext(io.out.rx.linkactivereq) || !rxDeact) && !reset.asBool
 
   io.out.syscoreq := true.B