Documentation: add fence-array to kernel DocBook

Include fence-array files in the DocBook.
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465226465-23683-1-git-send-email-gustavo@padovan.org

Documentation/DocBook/device-drivers.tmpl

@@ -132,8 +132,10 @@ X!Edrivers/base/interface.c
 !Edrivers/dma-buf/dma-buf.c
 !Edrivers/dma-buf/fence.c
 !Edrivers/dma-buf/seqno-fence.c
+!Edrivers/dma-buf/fence-array.c
 !Iinclude/linux/fence.h
 !Iinclude/linux/seqno-fence.h
+!Iinclude/linux/fence-array.h
 !Edrivers/dma-buf/reservation.c
 !Iinclude/linux/reservation.h
 !Edrivers/dma-buf/sync_file.c