Update pulp_riscv_dbg to pulp-platform/riscv-dbg@834853c

Update code from upstream repository https://github.com/pulp-
platform/riscv-dbg to revision
834853c0c68fc48d032a3e256e563f2b0bd28492

* Added missing reset to cmd_valid_q; fixes pulp-platform/riscv-dbg#28
  (Arjan Bink)
* Update CHANGELOG.md with OBI wrapper addition (Arjan Bink)
* Add optional wrapper to make dm_top compatible to the OBI spec
  (Arjan Bink)
* Avoid X's on hartinfo_i in assertion at time 0 (Eugene Feinberg)
* Fix dependency typo (Eugene Feinberg)
* Fix haltsum1-3 calculation (bluew)
* Update CHANGELOG.md (bluew)
* Make two scratch debug rom the default (Florian Zaruba)
* riscv-dbg: Make second scratch register optional (Florian Zaruba)
* Simplify cross compilation step (bluew)
* Add CI badge to README.md (bluew)
* Update CHANGELOG.md (bluew)
* Add tb running dm+ri5cy through OpenOCD compliance tests (bluew)
* Fixed a typo (: vs ::) in dp_mem.sv that crashed compilation
  (Florian Glaser)
* Use correct bit width (pbing)
* Use explicit base address for data regiser access (bluew)
* Fix off-by-one error in data and progbuf end address (bluew)
* Correct typos in dm_csrs.sv (Felix Yan)
* Fix date in changelog (Philipp Wagner)
* Update CHANGELOG.md (bluew)

Signed-off-by: Michael Schaffner <msf@opentitan.org>
diff --git a/hw/vendor/pulp_riscv_dbg/Bender.yml b/hw/vendor/pulp_riscv_dbg/Bender.yml
index 3b4f7f7..150a79d 100644
--- a/hw/vendor/pulp_riscv_dbg/Bender.yml
+++ b/hw/vendor/pulp_riscv_dbg/Bender.yml
@@ -5,9 +5,11 @@
   files:
     - src/dm_pkg.sv
     - debug_rom/debug_rom.sv
+    - debug_rom/debug_rom_snd_scratch.sv
     - src/dm_csrs.sv
     - src/dm_mem.sv
     - src/dm_top.sv
+    - src/dm_obi_top.sv
     - src/dmi_cdc.sv
     - src/dmi_jtag.sv
     - src/dmi_jtag_tap.sv