tilelink2: refactor address into addr_hi on ABC and addr_lo on CD

We need addr_lo in order to properly convert widths.
As part of the refactoring, move all methods out of the Bundles

src/main/scala/uncore/tilelink2/package.scala

@@ -5,4 +5,6 @@ import Chisel._
 package object tilelink2
 {
   type TLBaseNode = BaseNode[TLClientPortParameters, TLManagerPortParameters, TLEdgeOut, TLEdgeIn, TLBundle]
+  def OH1ToUInt(x: UInt) = OHToUInt((x << 1 | UInt(1)) ^ x)
+  def UIntToOH1(x: UInt, width: Int) = ~(SInt(-1, width=width).asUInt << x)(width-1, 0)
 }