Add old TLSerdes

generators/chipyard/src/main/scala/DigitalTop.scala

@@ -19,7 +19,8 @@ class DigitalTop(implicit p: Parameters) extends ChipyardSystem
   with testchipip.cosim.CanHaveTraceIO // Enables optionally adding trace IO
   with testchipip.soc.CanHaveBankedScratchpad // Enables optionally adding a banked scratchpad
   with testchipip.iceblk.CanHavePeripheryBlockDevice // Enables optionally adding the block device
-  with testchipip.serdes.CanHavePeripheryTLSerial // Enables optionally adding the backing memory and serial adapter
+  with testchipip.serdes.CanHavePeripheryTLSerial // Enables optionally adding the tl-serial interface
+  with testchipip.serdes.old.CanHavePeripheryTLSerial // Enables optionally adding the DEPRECATED tl-serial interface
   with testchipip.soc.CanHavePeripheryChipIdPin // Enables optional pin to set chip id for multi-chip configs
   with sifive.blocks.devices.i2c.HasPeripheryI2C // Enables optionally adding the sifive I2C
   with sifive.blocks.devices.timer.HasPeripheryTimer // Enables optionally adding the timer device