Define IFace

Bug: 168730443
Test: m android.hardware.biometrics.face-update-api
Change-Id: I6bd1d1240ef91680d8b96cb84849431c25265358
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 4ac1973..a99f8fe 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -96,6 +96,13 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.biometrics.face</name>
+        <interface>
+            <name>IFace</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.biometrics.fingerprint</name>
         <version>2.1-3</version>