Set sepolicy for vmnic in AVF

Bug: 340376951
Test: Presubmit
Change-Id: I5f48ff4a459805de2f74d160c1b61473c6de0466
diff --git a/apex/com.android.virt-file_contexts b/apex/com.android.virt-file_contexts
index 78720aa..d8fc8df 100644
--- a/apex/com.android.virt-file_contexts
+++ b/apex/com.android.virt-file_contexts
@@ -6,3 +6,6 @@
 is_flag_enabled(RELEASE_AVF_ENABLE_DEVICE_ASSIGNMENT, `
     /bin/vfio_handler          u:object_r:vfio_handler_exec:s0
 ')
+is_flag_enabled(RELEASE_AVF_ENABLE_NETWORK, `
+    /bin/vmnic u:object_r:vmnic_exec:s0
+')