buildroot

lzip: new package

The host variant is in preparation for possibly some gnu packages
shipping tar.lz versions only.
At least ed 1.10 did it (still needed to add extraction support for it).

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>