[aes/dv] Add AES dv documentation and base DV structure

This commit contains the initial DV documenatation,
dv code and a single testcase aes_wakeup_test that verifies base functionality
TDB: real constraint random testing.

Signed-off-by: Rasmus Madsen <rasmus.madsen@wdc.com>
diff --git a/util/build_docs.py b/util/build_docs.py
index 1a5753e..f928212 100755
--- a/util/build_docs.py
+++ b/util/build_docs.py
@@ -71,6 +71,7 @@
 
     # Pre-generate testplan fragments from these files.
     "testplan_definitions": [
+        "hw/ip/aes/data/aes_testplan.hjson",
         "hw/ip/gpio/data/gpio_testplan.hjson",
         "hw/ip/hmac/data/hmac_testplan.hjson",
         "hw/ip/i2c/data/i2c_testplan.hjson",