services: Keep vendor.lineage.* classes

Change-Id: Icfc95618a136407cd5d9bda8c9972006a7b9e913

Former-commit-id: c73112dda9038c21606620975a905d24d6db9e0c
diff --git a/services/proguard.flags b/services/proguard.flags
index 920256c..3d366bd 100644
--- a/services/proguard.flags
+++ b/services/proguard.flags
@@ -129,3 +129,4 @@
 # SDK
 -keep,allowoptimization,allowaccessmodification class omnirom.** { *; }
 -keep,allowoptimization,allowaccessmodification class org.omnirom.** { *; }
+-keep,allowoptimization,allowaccessmodification class vendor.lineage.** { *; }