ART: Allow to compile interpret-only mips64 files

Include enough infrastructure to allow cross-compiling for mips64,
interpret-only. This includes the instruction-set-features, frame
size info and utils assembler.

Also add a disassembler for oatdump, and support in patchoat.

Note: the runtime cannot run mips64, yet.

Change-Id: Id106581fa76b478984741c62a8a03be0f370d992
diff --git a/compiler/compiled_method.cc b/compiler/compiled_method.cc
index 234e8b9..22be28c 100644
--- a/compiler/compiled_method.cc
+++ b/compiler/compiled_method.cc
@@ -63,6 +63,7 @@
     case kArm:
     case kArm64:
     case kMips:
+    case kMips64:
     case kX86:
     case kX86_64:
       return 0;
@@ -82,6 +83,7 @@
     case kArm:
     case kArm64:
     case kMips:
+    case kMips64:
     case kX86:
     case kX86_64:
       return code_pointer;