Fix missing BCC_STRIP_ATTR dependency.

Change-Id: I602c2eb2df3d0b1013ae31c427ef35d0c6c25c6b
diff --git a/lib/Renderscript/runtime/build_bc_lib.mk b/lib/Renderscript/runtime/build_bc_lib.mk
index e1d8a3e..f621969 100644
--- a/lib/Renderscript/runtime/build_bc_lib.mk
+++ b/lib/Renderscript/runtime/build_bc_lib.mk
@@ -62,7 +62,7 @@
 $(LOCAL_BUILT_MODULE): PRIVATE_BC_FILES := $(c_bc_files) $(ll_bc_files)
 $(LOCAL_BUILT_MODULE): $(c_bc_files) $(ll_bc_files)
 $(LOCAL_BUILT_MODULE): $(LLVM_LINK) $(clcore_LLVM_LD)
-$(LOCAL_BUILT_MODULE): $(LLVM_AS)
+$(LOCAL_BUILT_MODULE): $(LLVM_AS) $(BCC_STRIP_ATTR)
 	@mkdir -p $(dir $@)
 	$(hide) $(LLVM_LINK) $(PRIVATE_BC_FILES) -o $@.unstripped
 	$(hide) $(BCC_STRIP_ATTR) -o $@ $@.unstripped