The OSSL_CORE_MAKE_FUNC macro has been added since 1.1.1 and is
undocumented. However it is not intended for application use and so we
document it as "reserved".
Fixes#13192
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14232)
