package/libcdio: needs host-pkgconf
With commit
https://github.com/libcdio/libcdio/commit/1f94664f766ef66b992e1c53a5e817a37988d894
upstream added a mandatory dependency to pkgconf in version 2.1.1.
Buildroot bumped libcdio with 920f45bd244166c8401dd05e054fc894eba143bf,
a backport is not needed.
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Julien Olivain <ju.o@free.fr>