AArch64: Temporary workaround to build art

This patch adds a temporary workaround to build art for
AArch64, thus allowing building of other dependent projects.

This needs to be reverted once proper AArch64 port is available.

Change-Id: Ib3d70b9d08ce774efbd4971ce319733dbdda86cc
Signed-off-by: Ashok Bhat <ashok.bhat@arm.com>
diff --git a/runtime/Android.mk b/runtime/Android.mk
index a602c83..4683543 100644
--- a/runtime/Android.mk
+++ b/runtime/Android.mk
@@ -226,7 +226,11 @@
 	arch/mips/quick_entrypoints_mips.S \
 	arch/mips/thread_mips.cc
 else # TARGET_ARCH != mips
+ifeq ($(TARGET_ARCH),aarch64)
+$(info TODOAArch64: $(LOCAL_PATH)/Android.mk Add AArch64 specific runtime files)
+else
 $(error unsupported TARGET_ARCH=$(TARGET_ARCH))
+endif # TARGET_ARCH != aarch64
 endif # TARGET_ARCH != mips
 endif # TARGET_ARCH != x86
 endif # TARGET_ARCH != x86_64