fips: Verify library integrity before running selftests.
* src/fips.c (run_hmac_sha256_selftests): New function. (_gcry_fips_run_selftests): Move integrity check earlier and run HMAC-SHA256 tests before that.
- GnuPG-bug-id: T5617
- Signed-off-by: Jakub Jelen <jjelen@redhat.com>