Initial changes towards Generic JNI option

Some initial changes that lead to an UNIMPLEMENTED. Works
by not compiling for JNI right now and tracking native methods
which have neither quick nor portable code. Uses new trampoline.

Change-Id: I5448654044eb2717752fd7359f4ef8bd5c17be6e
diff --git a/runtime/arch/mips/quick_entrypoints_mips.S b/runtime/arch/mips/quick_entrypoints_mips.S
index d23be47..c3ae563 100644
--- a/runtime/arch/mips/quick_entrypoints_mips.S
+++ b/runtime/arch/mips/quick_entrypoints_mips.S
@@ -1007,6 +1007,8 @@
     DELIVER_PENDING_EXCEPTION
 END art_quick_resolution_trampoline
 
+UNIMPLEMENTED art_quick_generic_jni_trampoline
+
     .extern artQuickToInterpreterBridge
 ENTRY art_quick_to_interpreter_bridge
     GENERATE_GLOBAL_POINTER