efl, expedite: explicitly add some packages, add libsdl dependency

* expedite has runtime dependency on them and insane_qa check doesn't see
  them as provided by evas dependency and shows following warnings:
  expedite-1.7.9: expedite rdepends on evas-engine-software-generic, but it isn't a build dependency? [build-deps]
  expedite-1.7.9: expedite rdepends on evas-engine-fb, but it isn't a build dependency? [build-deps]
  expedite-1.7.9: expedite rdepends on evas-loader-png, but it isn't a build dependency? [build-deps]
* always use libsdl dependency instead of PACKAGECONFIG, because
  there is also software-sdl engine, which isn't controlled by
  any configure option

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>