Avoid linking error on WCE700 for _InterlockedExchangeAdd().

This implementation is referenced to https://www.boost.org/doc/libs/1_69_0/boost/detail/interlocked.hpp



Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8596)