Fix debug flag ordering

art_debug_defaults needs to come first in the defaults list so that its
prepended flags come after the art_defaults flags.
-Wno-frame-larger-than= also needs to be inside a target block to match the
way the -Wframe-larger-than= flags are inserted by art.go so that they
come after.

Change-Id: I17c191ec9dcc393db1e0805cd058c768e4d09400
diff --git a/runtime/Android.bp b/runtime/Android.bp
index c92df4e..ac65d89 100644
--- a/runtime/Android.bp
+++ b/runtime/Android.bp
@@ -449,8 +449,8 @@
 art_cc_library {
     name: "libartd",
     defaults: [
-        "libart_defaults",
-        "art_debug_defaults",
+       "art_debug_defaults",
+       "libart_defaults",
     ],
 }