buildroot

sdl: add host version

Host version is needed to build xbmc

[Peter: use _PRE_CONFIGURE_HOOKS like target version]
Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>