kbuild distclean srctree fix

Hello all,

I just find a bug that ``make distclean'' cannot remove the editor backup files and the like when using build directory. That is because the find command is improperly searching the build directory instead of the $(srctree) it should. .
This simple patch fixes the problem.

-- coywolf

===============================================================

@@ -841,7 +841,7 @@ mrproper: clean archmrproper $(mrproper-

.PHONY: distclean

distclean: mrproper
- @find . $(RCS_FIND_IGNORE) \

+	@find $(srctree) $(RCS_FIND_IGNORE) \
	 	\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
	 	-o -name '.*.rej' -o -size 0 \

Coywolf Qi Hunt
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