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/disassembler/Android.mk b/disassembler/Android.mk
index 3ad2941..218b23b 100644
--- a/disassembler/Android.mk
+++ b/disassembler/Android.mk
@@ -23,6 +23,7 @@
 	disassembler_arm.cc \
 	disassembler_arm64.cc \
 	disassembler_mips.cc \
+	disassembler_mips64.cc \
 	disassembler_x86.cc
 
 # $(1): target or host