ServiceUtilities: add comment on isAudioServerOrSystemServerUid()

Add reminder to also update the method of the same name in
SensorService.h when updating isAudioServerOrSystemServerUid()

Bug: 210803914
Test: make
Change-Id: I4b7f5d024de0f7c78fa88f9781f5d60e98792585
diff --git a/media/utils/include/mediautils/ServiceUtilities.h b/media/utils/include/mediautils/ServiceUtilities.h
index 2fe2451..cb428ec 100644
--- a/media/utils/include/mediautils/ServiceUtilities.h
+++ b/media/utils/include/mediautils/ServiceUtilities.h
@@ -61,6 +61,7 @@
 
 // Used for calls that should come from system server or internal.
 // Note: system server is multiprocess for multiple users.  audioserver is not.
+// Note: if this method is modified, also update the same method in SensorService.h.
 static inline bool isAudioServerOrSystemServerUid(uid_t uid) {
     return multiuser_get_app_id(uid) == AID_SYSTEM || uid == AID_AUDIOSERVER;
 }