Revert "android.hardware.media.c2: Move to staging/"

This reverts commit a8c9aa31730c0790045d2dd2f0f876261b44ad63.

Bug: 254050314
Change-Id: Ia85af4e013529e104c84bc48f84a5daa89a5d9bf
diff --git a/compatibility_matrices/compatibility_matrix.9.xml b/compatibility_matrices/compatibility_matrix.9.xml
index a4c6ea4..53d2752 100644
--- a/compatibility_matrices/compatibility_matrix.9.xml
+++ b/compatibility_matrices/compatibility_matrix.9.xml
@@ -365,6 +365,15 @@
         </interface>
     </hal>
     <hal format="aidl" optional="true">
+        <name>android.hardware.media.c2</name>
+        <version>1</version>
+        <interface>
+            <name>IComponentStore</name>
+            <regex-instance>default[0-9]*</regex-instance>
+            <regex-instance>vendor[0-9]*_software</regex-instance>
+        </interface>
+    </hal>
+    <hal format="aidl" optional="true">
         <name>android.hardware.memtrack</name>
         <version>1</version>
         <interface>