Add runtimeISA logging when no original dex files

It's easy to figure out which ABI uses for the issued process.
Bug: none
Test: N/A

Change-Id: Ia3a66e1ab5503fd1061cf51ff560fe5a1d168599
Signed-off-by: randy.jeong <randy.jeong@samsung.com>
diff --git a/runtime/oat_file_manager.cc b/runtime/oat_file_manager.cc
index ed55110..111053a 100644
--- a/runtime/oat_file_manager.cc
+++ b/runtime/oat_file_manager.cc
@@ -641,8 +641,9 @@
         error_msgs->push_back("Fallback mode disabled, skipping dex files.");
       }
     } else {
-      error_msgs->push_back("No original dex files found for dex location "
-          + std::string(dex_location));
+      std::string msg = StringPrintf("No original dex files found for dex location (%s) %s",
+          GetInstructionSetString(kRuntimeISA), dex_location);
+      error_msgs->push_back(msg);
     }
   }