Add the "virtual" instance for face HAL retroactively am: f426201991 am: 331cdf4127

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2751164

Change-Id: I2c29015aaffd08b404a716915df73b9ed41d0f09
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/compatibility_matrices/compatibility_matrix.8.xml b/compatibility_matrices/compatibility_matrix.8.xml
index 9e3b8f9..2a1f4a5 100644
--- a/compatibility_matrices/compatibility_matrix.8.xml
+++ b/compatibility_matrices/compatibility_matrix.8.xml
@@ -120,6 +120,7 @@
         <interface>
             <name>IFace</name>
             <instance>default</instance>
+            <instance>virtual</instance>
         </interface>
     </hal>
     <hal format="aidl" optional="true" updatable-via-apex="true">