Clarify getService log.

This was causing some confusion.

Test: pass
Change-Id: Id7c75deaf311493b704f58074abf1df73eec5256
diff --git a/generateCpp.cpp b/generateCpp.cpp
index 26765bb..ce82edc 100644
--- a/generateCpp.cpp
+++ b/generateCpp.cpp
@@ -240,7 +240,7 @@
                 //    to hwservicemanager or to the service itself (interfaceChain
                 //    is not consistent)
                 // In all cases, try again.
-                out << "ALOGW(\"getService: found null interface\");\n"
+                out << "ALOGW(\"getService: found null hwbinder interface\");\n"
                     << "continue;\n";
             }).endl();