Add platform/compatibility/cdd

BUG:32070486
Change-Id: If75dd18d7c900309bf0f6599436b56f11427fa5f

default.xml

@@ -21,6 +21,7 @@
   <project path="art" name="platform/art" groups="pdk" />
   <project path="bionic" name="platform/bionic" groups="pdk" />
   <project path="bootable/recovery" name="platform/bootable/recovery" groups="pdk" />
+  <project path="compatibility/cdd" name="platform/compatibility/cdd" groups="pdk" />
   <project path="cts" name="platform/cts" groups="cts,pdk-cw-fs,pdk-fs" />
   <project path="dalvik" name="platform/dalvik" groups="pdk-cw-fs,pdk-fs" />
   <project path="developers/build" name="platform/developers/build" />