kbuild: use scripts/Makefile.clean
This commit refactors cleaning targets such as
clean, clobber, mrpropper, distclean
with scripts/Makefile.clean.
By using scripts/Makefile.clean, we can recursively descend
into subdirectories and delete generated files there.
We do not need add a big list of generated files
to the "clean" target.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/board/cray/L1/Makefile b/board/cray/L1/Makefile
index 6aae9fa..63f43da 100644
--- a/board/cray/L1/Makefile
+++ b/board/cray/L1/Makefile
@@ -14,3 +14,5 @@
$(obj)/bootscript.image: $(src)/bootscript.hush
-$(OBJTREE)/tools/mkimage -A ppc -O linux -T script -C none -a 0 -e 0 -n bootscript -d $< $@
+
+clean-files := bootscript.c bootscript.image
\ No newline at end of file