Sanity check provider up-calls

Sanity check provider up-calls

When we store references to up-calls for future reference we run a sanity
check to make sure we either previously haven't set these values or they
are the same as last time. We don't support the scenario where an
application is linked against multiple versions of libcrypto but using a
shared fips.so file. This would result in different up-calls for different
calls to OSSL_provider_init(), which we currently can't handle.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14814)