package/sqlite: fix parallel build failures

Fixes:
    http://autobuild.buildroot.org/results/aed/aed3690689b60844e3278626da3c3eb75f2a2586/



Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>