Add default implementation for CAS AIDL

Bug: 230377377, 227673974
Test: manual
Change-Id: I85015dd6e1a69ff9b57f832f5b1cd01fb65dda25
diff --git a/cas/aidl/default/android.hardware.cas-service.xml b/cas/aidl/default/android.hardware.cas-service.xml
new file mode 100755
index 0000000..6389fe2
--- /dev/null
+++ b/cas/aidl/default/android.hardware.cas-service.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.cas</name>
+        <fqname>IMediaCasService/default</fqname>
+    </hal>
+</manifest>