Add the DocBook documentation for the Userspace I/O framework
to the Makefile.
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
            procfs-guide.xml writing_usb_driver.xml \
            kernel-api.xml filesystems.xml lsm.xml usb.xml \
            gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
-           genericirq.xml s390-drivers.xml
+           genericirq.xml s390-drivers.xml uio-howto.xml
 
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 # The build process is as follows (targets):