tile: remove global Field ResetVectorBits

Reset vector width is determined by systemBus.busView.
Also move some defs from HasCoreParameters to HasTileParameters.

src/main/scala/coreplex/SystemBus.scala

@@ -125,4 +125,5 @@ trait HasSystemBus extends HasInterruptBus {
   val sbus = new SystemBus(sbusParams)
 
   def sharedMemoryTLEdge: TLEdge = sbus.busView
+  def paddrBits: Int = sbus.busView.bundle.addressBits
 }