Add Comments for androidx.car_car reference in SystemUpdater
am: 4b4cc18e6c

Change-Id: I3de970470cfad695c0afca02c293d86918c5ef97
diff --git a/Android.mk b/Android.mk
index a462b90..a5fce36 100644
--- a/Android.mk
+++ b/Android.mk
@@ -36,6 +36,9 @@
 
 LOCAL_DX_FLAGS := --multi-dex
 
+# This module depends on androidx.car_car for legacy reasons.
+# Don't copy-paste the use of androidx.car_car
+
 LOCAL_STATIC_ANDROID_LIBRARIES := \
     androidx.car_car \
     androidx.legacy_legacy-support-v4 \