Use obj-y to clean up Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
arch/$(SRCARCH)/Kbuild is useful for Makefile cleanups because you can use the obj-y syntax. Add an empty file if it is missing in arch/$(SRCARCH)/. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>