polarssl: security bump to version 1.2.11

Fixes CVE-2014-4911 and a few other issues that don't have a CVE assigned
(backports from 1.3.x branch).
The no programs & shared/static patches are now upstream albeit in a
slightly different form.

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