Add sepolicy for biometric face virtual hal

Bug: 326227403
Test: atest CtsBiometricTestCases
Change-Id: I24559117b133628fa83ee1a2f58e616be6fdf6eb
diff --git a/apex/Android.bp b/apex/Android.bp
index 4daff80..a6d0853 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -307,3 +307,10 @@
         "com.android.uprobestats-file_contexts",
     ],
 }
+
+filegroup {
+    name: "com.android.biometrics.virtual.face-file_contexts",
+    srcs: [
+        "com.android.biometrics.virtual.face-file_contexts",
+    ],
+}