openssl 1.0.2d fixes the parallel make problems (commit 8e6bb99), so enable
parallel make again.
[ YOCTO #7347 ]
(From OE-Core rev: ea89857f17a374b6095371ebe2422d2e83735cee)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>