fips: use memory ordering rather than locks
The FIPS provider accesses it's current state under lock.
This is overkill, little or no synchronisation is actually required in
practice (because it's essentially a read only setting). Switch to using
TSAN operations in preference.
Fixes #21179
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21187)
(cherry picked from commit
8e9ca334528e0a923c4deb0af250a60510974be0)