[dcd] add auto generated tb

Signed-off-by: Timothy Chen <timothytim@google.com>

[dcd] update fifo depth

pending #5028

Signed-off-by: Timothy Chen <timothytim@google.com>

[dv] add dcd csr tests to smoke regression

Signed-off-by: Timothy Chen <timothytim@google.com>

[dcd] updates to address comments

Signed-off-by: Timothy Chen <timothytim@google.com>

[dcd] Add doc placeholder

Signed-off-by: Timothy Chen <timothytim@google.com>
diff --git a/util/build_docs.py b/util/build_docs.py
index cc4ee04..e45d5f4 100755
--- a/util/build_docs.py
+++ b/util/build_docs.py
@@ -57,6 +57,7 @@
         "hw/top_earlgrey/ip/alert_handler/data/autogen/alert_handler.hjson",
         "hw/ip/entropy_src/data/entropy_src.hjson",
         "hw/ip/csrng/data/csrng.hjson",
+        "hw/ip/dcd/data/dcd.hjson",
         "hw/ip/edn/data/edn.hjson",
         "hw/ip/flash_ctrl/data/flash_ctrl.hjson",
         "hw/ip/gpio/data/gpio.hjson",
@@ -96,6 +97,7 @@
         "hw/ip/aon_timer/data/aon_timer_testplan.hjson",
         "hw/ip/entropy_src/data/entropy_src_testplan.hjson",
         "hw/ip/csrng/data/csrng_testplan.hjson",
+        "hw/ip/dcd/data/dcd_testplan.hjson",
         "hw/ip/edn/data/edn_testplan.hjson",
         "hw/ip/flash_ctrl/data/flash_ctrl_testplan.hjson",
         "hw/ip/gpio/data/gpio_testplan.hjson",