package/minidlna: fix static build

libvorbis.pc does not exist, it is named vorbis.pc.
Also, sqlite3 was missing when querying pkg-config.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>