linux-wandboard

DocBook/media: renamed xml documents to tmpl

DocBook makefile expects that the documents to be in tmpl extension,
since it has some preprocessing that it is done on it. This preprocessing
is not needed currently, but, as it removes the xml versions, we're
forced to rename anyway.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>