Support 64-bit volatiles and reference/pointer volatiles.

Change-Id: I62c0751747767c02d6c57afd0fce3db6c8b02510
diff --git a/build/Android.common.mk b/build/Android.common.mk
index 7a31ceb..933fdf5 100644
--- a/build/Android.common.mk
+++ b/build/Android.common.mk
@@ -55,6 +55,7 @@
 	src/assembler.cc \
 	src/assembler_arm.cc \
 	src/assembler_x86.cc \
+	src/atomic.cc.arm \
 	src/calling_convention.cc \
 	src/calling_convention_arm.cc \
 	src/calling_convention_x86.cc \