[rv_dm,dv] Explicitly add two tlul adapters to CSR tests' coverage

These adapters are properly tested in the CSR tests (like e.g.
rv_dm_jtag_dtm_csr_rw) that use cover_reg_top.cfg. So we should
collect their coverage for those tests.

Signed-off-by: Rupert Swarbrick <[email protected]>

hw/ip/rv_dm/dv/cov/cover_reg_top.cfg

@@ -5,6 +5,11 @@
 +node tb.dut *_tl_*
 +node tb.dut jtag_*
 
+// Collect coverage from TL adapter instances that are used for registers and (as such) get properly
+// stimulated and tested by the automated register tests.
++tree tb.dut.tl_adapter_host_sba
++tree tb.dut.i_tlul_adapter_reg
+
 // The JTAG DTM is functionally verified, even in CSR tests.
 begin line+cond+fsm+branch+assert
   +moduletree dmi_jtag