Add platform/compatibility/cdd

BUG:65287881
Change-Id: Ia429f05f23e1db3dea78053cfb0825404a147b6d
diff --git a/default.xml b/default.xml
index aa5953a..99db102 100644
--- a/default.xml
+++ b/default.xml
@@ -26,6 +26,7 @@
   <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" />