ustream-ssl: add support for polarssl 1.3

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39929 3c298f89-4303-0410-b956-a3cf2f4a3e73
polarssl: update to version 1.3.4 and add openssl compat patch

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39930 3c298f89-4303-0410-b956-a3cf2f4a3e73