Enhance target architecture selection rules.

Change-Id: I595f8b6d9acd36bffc0017f06a959e709b9707d5
diff --git a/lib/Disassembler/Android.mk b/lib/Disassembler/Android.mk
index 701f606..1b5ff4d 100644
--- a/lib/Disassembler/Android.mk
+++ b/lib/Disassembler/Android.mk
@@ -42,6 +42,7 @@
 LOCAL_SRC_FILES := $(libbcc_disassembler_SRC_FILES)
 
 include $(LIBBCC_ROOT_PATH)/libbcc-gen-config-from-mk.mk
+include $(LIBBCC_ROOT_PATH)/libbcc-build-rules.mk
 include $(LLVM_ROOT_PATH)/llvm-device-build.mk
 include $(BUILD_STATIC_LIBRARY)
 
@@ -63,6 +64,7 @@
 LOCAL_SRC_FILES := $(libbcc_disassembler_SRC_FILES)
 
 include $(LIBBCC_ROOT_PATH)/libbcc-gen-config-from-mk.mk
+include $(LIBBCC_ROOT_PATH)/libbcc-build-rules.mk
 include $(LLVM_ROOT_PATH)/llvm-host-build.mk
 include $(BUILD_HOST_STATIC_LIBRARY)