Add cas hidl to goldfish.

bug: 70507373
bug: 77913148
It's there for real devices, but not the emulator.

Test: Pass all of android.media.cts.MediaCasTest
Change-Id: I06039d8b80399c7b539e86bf44748015f8adeabe
(cherry picked from commit 0e377c96a8657193148407e3b300f1656dae7836)
diff --git a/manifest.xml b/manifest.xml
index 98bc755..04e863e 100644
--- a/manifest.xml
+++ b/manifest.xml
@@ -198,6 +198,15 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="hidl">
+        <name>android.hardware.cas</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IMediaCasService</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <sepolicy>
         <version>10000.0</version>
     </sepolicy>