Enhance the oprofile_android harness to support opannotate.

Also s/objdump/arm-eabi-objdump in opannotate.cpp.

Change-Id: I51b35da926a9ad189c6758c3f10084a4b9766524
diff --git a/pp/opannotate.cpp b/pp/opannotate.cpp
index 5c224aa..8df841b 100644
--- a/pp/opannotate.cpp
+++ b/pp/opannotate.cpp
@@ -417,7 +417,11 @@
 	}
 
 	args.push_back(image_name);
+#if defined(ANDROID)
+	child_reader reader("arm-eabi-objdump", args);
+#else
 	child_reader reader("objdump", args);
+#endif
 	if (reader.error()) {
 		cerr << "An error occur during the execution of objdump:\n\n";
 		cerr << reader.error_str() << endl;