ia64: Fix Makefiles so that "make clean" removes the files generated

	in the tools directory.  Patch by Yu, Fenghua.

arch/ia64/Makefile

@@ -64,6 +64,7 @@ check: vmlinux
 archmrproper:
 archclean:
 	$(Q)$(MAKE) -f scripts/Makefile.clean obj=arch/ia64/boot
+	$(Q)$(MAKE) -f scripts/Makefile.clean obj=arch/ia64/tools
 
 CLEAN_FILES += include/asm-ia64/offsets.h vmlinux.gz bootloader
 

arch/ia64/tools/Makefile

@@ -4,14 +4,7 @@ TARGET	= include/asm-ia64/offsets.h
 
 src = $(obj)
 
-all:
-
-fastdep:
-
-mrproper: clean
-
-clean:
-	rm -f $(obj)/print_offsets.s $(obj)/print_offsets $(obj)/offsets.h
+clean-files := print_offsets.s print_offsets offsets.h
 
 $(TARGET): $(obj)/offsets.h
 	@if ! cmp -s $(obj)/offsets.h ${TARGET}; then	\