asciidoc-native: add dependency on docbook-xml-dtd4-native
During the compilation phase asciidoc runs a2x for validation
of some xmls which in turn invokes xmllint with --nonet
parameter that requires DTDs to be available locally in order
to succeed otherwise the do_compile fails.
We now add a direct dependency on docbook-xml-dtd4 so the
DTDs are always available locally.
Signed-off-by: Awais Belal <awais_belal@mentor.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
