Revert "disable V matrix."

This reverts commit c2340359de15f4c363197a5ac32691c131cba2e3.

Reason for revert: re-enable on udc-dev-plus-aosp b/c DO NOT| MERGE
barrier is configured there.

Change-Id: I0602be91d7e26b4cf090700497fde6425b4540c8
diff --git a/compatibility_matrices/Android.bp b/compatibility_matrices/Android.bp
index 93b5380..b3ca293 100644
--- a/compatibility_matrices/Android.bp
+++ b/compatibility_matrices/Android.bp
@@ -82,3 +82,15 @@
         "kernel_config_u_6.1",
     ],
 }
+
+vintf_compatibility_matrix {
+    name: "framework_compatibility_matrix.9.xml",
+    stem: "compatibility_matrix.9.xml",
+    srcs: [
+        "compatibility_matrix.9.xml",
+    ],
+    kernel_configs: [
+        "kernel_config_v_5.15",
+        "kernel_config_v_6.1",
+    ],
+}