infozip: Add a host variant

Adding a host variant to the package infozip. It will be used by XBMC.

[Thomas: use HOST_CONFIGURE_OPTS instead of TARGET_CONFIGURE_OPTS in
the host installation step.]

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>