build: enable MIPS16 by default if available

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37926 3c298f89-4303-0410-b956-a3cf2f4a3e73
openssl: add parallel build support

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37927 3c298f89-4303-0410-b956-a3cf2f4a3e73