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/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 9985d66..968c77e 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -363,7 +363,7 @@
       dump_passes_(dump_passes),
       timings_logger_(timer),
       compiler_context_(nullptr),
-      support_boot_image_fixup_(instruction_set != kMips),
+      support_boot_image_fixup_(instruction_set != kMips && instruction_set != kMips64),
       dedupe_code_("dedupe code", *swap_space_allocator_),
       dedupe_src_mapping_table_("dedupe source mapping table", *swap_space_allocator_),
       dedupe_mapping_table_("dedupe mapping table", *swap_space_allocator_),
@@ -2094,6 +2094,7 @@
     case kArm64:
     case kThumb2:
     case kMips:
+    case kMips64:
     case kX86:
     case kX86_64: return true;
     default: return false;