Since BOARD_GPU_DRIVERS is updated, clean up gallium_dri to ensure
it is rebuilt correctly.
$(call add-clean-step, rm -rf $(HOST_OUT_release)/*/EXECUTABLES/glsl_compiler_intermediates)
$(call add-clean-step, rm -rf $(HOST_OUT_release)/*/STATIC_LIBRARIES/libmesa_*_intermediates)
$(call add-clean-step, rm -rf $(PRODUCT_OUT)/*/SHARED_LIBRARIES/*_dri_intermediates)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/*/SHARED_LIBRARIES/*_dri_intermediates)