Add clarifying comment on enableAddServiceCache

Test: N/A
Flag: exempt refactor
Bug: N/A
Change-Id: I58a13383812d4821299346914795a2d4312781f4

Author: parthsane

libs/binder/include/binder/IServiceManager.h

@@ -153,7 +153,7 @@ class LIBBINDER_EXPORTED IServiceManager : public IInterface {
 
     /**
      * Directly enable or disable caching binder during addService calls.
-     * Only used for testing.
+     * Only used for testing. This is enabled by default.
      */
     virtual void enableAddServiceCache(bool value) = 0;
 };