[PATCH] docbook: *docs targets fixed, clean ok for html

Made the *docs targets work after the restructuring of the kbuild files.

Fix cleaning up after make htmldocs, there are some directories
that needs to be deleted in that case.

Documentation/DocBook/Makefile

@@ -160,8 +160,6 @@ clean-files := $(DOCBOOKS) \
 	$(patsubst %.fig,%.png, $(IMG-parportbook)) \
 	$(C-procfs-example)
 
-ifneq ($(wildcard $(BOOKS)),)
-clean-rule := rm -rf $(wildcard $(BOOKS))
+ifneq ($(wildcard $(patsubst %.html,%,$(HTML))),)
+clean-rule := rm -rf $(wildcard $(patsubst %.html,%,$(HTML)))
 endif
-
-include $(TOPDIR)/Rules.make

Makefile

@@ -799,7 +799,7 @@ help:
 # Documentation targets
 # ---------------------------------------------------------------------------
 sgmldocs psdocs pdfdocs htmldocs: scripts
-	$(Q)$(MAKE) -f Documentation/DocBook/Makefile $@
+	$(Q)$(MAKE) -f scripts/Makefile.build obj=Documentation/DocBook $@
 
 # Scripts to check various things for consistency
 # ---------------------------------------------------------------------------